The Game Census
AER Memories of Old cover art

AER Memories of Old

Forgotten Key · Daedalic Entertainment · 2017-10-25

SteamGOGPlayStation StoreEpic Games StoreMicrosoft Store

AdventureIndie

Modes: Single player

Releases: Oct 25, 2017 (PlayStation 4), Oct 25, 2017 (Mac), Oct 25, 2017 (Linux), Oct 25, 2017 (Xbox One), Aug 28, 2019 (Nintendo Switch), Oct 25, 2017 (PC (Microsoft Windows))

Transform into a bird and fly to explore and experience a vibrant world of floating islands in the sky. Venture down into lost ancient ruins where each step leads you closer to the end of the world.

8
playing now
86%
positive of 7.7k reviews
Very Positive
steam rating
200,000–500,000
owners (SteamSpy est.)
68/100
critic score (4 outlets, IGDB)
65/100
IGDB user rating (73 ratings)
4h
to beat · rushed 3h · completionist 7h
gold
deck/linux tier (ProtonDB)
$14.99
steam price (US)

8 players in-game as of 2026-08-30 18:00 UTC (census sample)

Aer: Memories of Old is an indie action-adventure open world video game developed by Forgotten Key and published by Daedalic Entertainment. It was released on October 25, 2017, for Microsoft Windows, PlayStation 4 and Xbox One, and on August 28, 2019, for Nintendo Switch. The game's story revolves around a girl named Auk who can shapeshift into a bird. Set on floating islands, the main character must solve puzzles, discovering ruins left by an ancient civilization. The game received mixed reviews from critics, who praised its aesthetic and world but criticized its short length and overall lack of action.

Health check

Quietly active
  • · 8 players in-game at the last census sample.
  • · 159 reviews in the last 8 weeks (~20/week).
  • · Review velocity down 13% vs the prior 8 weeks.
  • · Top 10% of 11,424 Adventure games in the census by review count.

Health tier since 2026-08-29

Estimated sales: 193k–463k copies

Review-multiple estimate from 7,721 total reviews — how this is computed.

Current store prices

GOG$1.49-90%
Humble Store$1.49-90%
Steam$1.49-90%
GOG$1.49-90%
lowest across shops (ITAD)$1.49-90%
Microsoft Store$14.99

Deal snapshots via CheapShark, refreshed daily.

All-time low: $0.81 at Gamer Thor (2024-11-01) · bundled 10×via IsThereAnyDeal

12-month high $14.99 · on sale 137 of 177 observed days · $0.68 above the all-time low (census price snapshots)

Review momentum

PositiveNegative
17117120182026Week of 2018-01-01: 60 positiveWeek of 2018-01-01: 14 negativeWeek of 2018-02-01: 20 positiveWeek of 2018-02-01: 4 negativeWeek of 2018-03-01: 31 positiveWeek of 2018-03-01: 8 negativeWeek of 2018-04-01: 67 positiveWeek of 2018-04-01: 11 negativeWeek of 2018-05-01: 28 positiveWeek of 2018-05-01: 1 negativeWeek of 2018-06-01: 55 positiveWeek of 2018-06-01: 11 negativeWeek of 2018-07-01: 28 positiveWeek of 2018-07-01: 8 negativeWeek of 2018-08-01: 38 positiveWeek of 2018-08-01: 4 negativeWeek of 2018-09-01: 18 positiveWeek of 2018-10-01: 24 positiveWeek of 2018-10-01: 2 negativeWeek of 2018-11-01: 37 positiveWeek of 2018-11-01: 2 negativeWeek of 2018-12-01: 21 positiveWeek of 2018-12-01: 3 negativeWeek of 2019-01-01: 24 positiveWeek of 2019-01-01: 4 negativeWeek of 2019-02-01: 15 positiveWeek of 2019-02-01: 8 negativeWeek of 2019-03-01: 15 positiveWeek of 2019-03-01: 2 negativeWeek of 2019-04-01: 15 positiveWeek of 2019-04-01: 3 negativeWeek of 2019-05-01: 13 positiveWeek of 2019-06-01: 52 positiveWeek of 2019-06-01: 7 negativeWeek of 2019-07-01: 37 positiveWeek of 2019-07-01: 5 negativeWeek of 2019-08-01: 53 positiveWeek of 2019-08-01: 11 negativeWeek of 2019-09-01: 23 positiveWeek of 2019-09-01: 1 negativeWeek of 2019-10-01: 23 positiveWeek of 2019-10-01: 5 negativeWeek of 2019-11-01: 55 positiveWeek of 2019-11-01: 4 negativeWeek of 2019-12-01: 98 positiveWeek of 2019-12-01: 10 negativeWeek of 2020-01-01: 89 positiveWeek of 2020-01-01: 5 negativeWeek of 2020-02-01: 66 positiveWeek of 2020-02-01: 7 negativeWeek of 2020-03-01: 41 positiveWeek of 2020-03-01: 1 negativeWeek of 2020-04-01: 69 positiveWeek of 2020-04-01: 12 negativeWeek of 2020-05-01: 47 positiveWeek of 2020-05-01: 6 negativeWeek of 2020-06-01: 69 positiveWeek of 2020-06-01: 11 negativeWeek of 2020-07-01: 74 positiveWeek of 2020-07-01: 5 negativeWeek of 2020-08-01: 52 positiveWeek of 2020-08-01: 8 negativeWeek of 2020-09-01: 33 positiveWeek of 2020-09-01: 5 negativeWeek of 2020-10-01: 52 positiveWeek of 2020-10-01: 6 negativeWeek of 2020-11-01: 51 positiveWeek of 2020-11-01: 8 negativeWeek of 2020-12-01: 110 positiveWeek of 2020-12-01: 18 negativeWeek of 2021-01-01: 62 positiveWeek of 2021-01-01: 6 negativeWeek of 2021-02-01: 79 positiveWeek of 2021-02-01: 13 negativeWeek of 2021-03-01: 27 positiveWeek of 2021-03-01: 5 negativeWeek of 2021-04-01: 51 positiveWeek of 2021-04-01: 5 negativeWeek of 2021-05-01: 114 positiveWeek of 2021-05-01: 19 negativeWeek of 2021-06-01: 136 positiveWeek of 2021-06-01: 20 negativeWeek of 2021-07-01: 87 positiveWeek of 2021-07-01: 12 negativeWeek of 2021-08-01: 118 positiveWeek of 2021-08-01: 18 negativeWeek of 2021-09-01: 171 positiveWeek of 2021-09-01: 20 negativeWeek of 2021-10-01: 92 positiveWeek of 2021-10-01: 18 negativeWeek of 2021-11-01: 80 positiveWeek of 2021-11-01: 6 negativeWeek of 2021-12-01: 95 positiveWeek of 2021-12-01: 11 negativeWeek of 2022-01-01: 53 positiveWeek of 2022-01-01: 10 negativeWeek of 2022-02-01: 60 positiveWeek of 2022-02-01: 10 negativeWeek of 2022-03-01: 33 positiveWeek of 2022-03-01: 5 negativeWeek of 2022-04-01: 51 positiveWeek of 2022-04-01: 12 negativeWeek of 2022-05-01: 38 positiveWeek of 2022-05-01: 5 negativeWeek of 2022-06-01: 42 positiveWeek of 2022-06-01: 6 negativeWeek of 2022-07-01: 42 positiveWeek of 2022-07-01: 12 negativeWeek of 2022-08-01: 39 positiveWeek of 2022-08-01: 2 negativeWeek of 2022-09-01: 39 positiveWeek of 2022-09-01: 4 negativeWeek of 2022-10-01: 31 positiveWeek of 2022-10-01: 4 negativeWeek of 2022-11-01: 38 positiveWeek of 2022-11-01: 3 negativeWeek of 2022-12-01: 57 positiveWeek of 2022-12-01: 8 negativeWeek of 2023-01-01: 75 positiveWeek of 2023-01-01: 7 negativeWeek of 2023-02-01: 25 positiveWeek of 2023-02-01: 4 negativeWeek of 2023-03-01: 34 positiveWeek of 2023-03-01: 5 negativeWeek of 2023-04-01: 35 positiveWeek of 2023-04-01: 10 negativeWeek of 2023-05-01: 66 positiveWeek of 2023-05-01: 14 negativeWeek of 2023-06-01: 114 positiveWeek of 2023-06-01: 19 negativeWeek of 2023-07-01: 69 positiveWeek of 2023-07-01: 13 negativeWeek of 2023-08-01: 44 positiveWeek of 2023-08-01: 13 negativeWeek of 2023-09-01: 30 positiveWeek of 2023-09-01: 7 negativeWeek of 2023-10-01: 43 positiveWeek of 2023-10-01: 5 negativeWeek of 2023-11-01: 35 positiveWeek of 2023-11-01: 5 negativeWeek of 2023-12-01: 41 positiveWeek of 2023-12-01: 8 negativeWeek of 2024-01-01: 61 positiveWeek of 2024-01-01: 6 negativeWeek of 2024-02-01: 34 positiveWeek of 2024-02-01: 8 negativeWeek of 2024-03-01: 26 positiveWeek of 2024-03-01: 10 negativeWeek of 2024-04-01: 38 positiveWeek of 2024-04-01: 6 negativeWeek of 2024-05-01: 22 positiveWeek of 2024-05-01: 7 negativeWeek of 2024-06-01: 29 positiveWeek of 2024-06-01: 3 negativeWeek of 2024-07-01: 33 positiveWeek of 2024-07-01: 5 negativeWeek of 2024-08-01: 25 positiveWeek of 2024-08-01: 4 negativeWeek of 2024-09-01: 19 positiveWeek of 2024-09-01: 7 negativeWeek of 2024-10-01: 19 positiveWeek of 2024-10-01: 4 negativeWeek of 2024-11-01: 25 positiveWeek of 2024-11-01: 3 negativeWeek of 2024-12-01: 25 positiveWeek of 2024-12-01: 6 negativeWeek of 2025-01-01: 40 positiveWeek of 2025-01-01: 7 negativeWeek of 2025-02-01: 15 positiveWeek of 2025-02-01: 5 negativeWeek of 2025-03-01: 19 positiveWeek of 2025-03-01: 7 negativeWeek of 2025-04-01: 21 positiveWeek of 2025-04-01: 3 negativeWeek of 2025-05-01: 17 positiveWeek of 2025-05-01: 6 negativeWeek of 2025-06-01: 21 positiveWeek of 2025-06-01: 4 negativeWeek of 2025-07-01: 19 positiveWeek of 2025-07-01: 7 negativeWeek of 2025-08-01: 18 positiveWeek of 2025-08-01: 1 negativeWeek of 2025-09-01: 12 positiveWeek of 2025-09-01: 4 negativeWeek of 2025-10-01: 27 positiveWeek of 2025-10-01: 6 negativeWeek of 2025-11-01: 14 positiveWeek of 2025-11-01: 3 negativeWeek of 2025-12-01: 13 positiveWeek of 2025-12-01: 9 negativeWeek of 2026-01-01: 15 positiveWeek of 2026-01-01: 2 negativeWeek of 2026-02-01: 16 positiveWeek of 2026-02-01: 3 negativeWeek of 2026-03-01: 28 positiveWeek of 2026-03-01: 3 negativeWeek of 2026-04-01: 10 positiveWeek of 2026-04-01: 4 negativeWeek of 2026-05-01: 22 positiveWeek of 2026-05-01: 1 negativeWeek of 2026-06-01: 15 positiveWeek of 2026-06-01: 1 negativeWeek of 2026-07-01: 15 positiveWeek of 2026-07-01: 2 negativeWeek of 2026-08-01: 14 positiveWeek of 2026-08-01: 8 negative
Weekly review counts (Steam review histogram). Positive above the line, negative below.

Players online

802026-08-06 23:00 — 1 players2026-08-07 07:00 — 0 players2026-08-07 15:00 — 6 players2026-08-07 23:00 — 2 players2026-08-08 07:00 — 3 players2026-08-08 15:00 — 4 players2026-08-08 23:00 — 6 players2026-08-09 07:00 — 3 players2026-08-09 15:00 — 4 players2026-08-09 23:00 — 2 players2026-08-10 07:00 — 3 players2026-08-10 15:00 — 4 players2026-08-10 23:00 — 1 players2026-08-11 07:00 — 2 players2026-08-11 15:00 — 2 players2026-08-12 23:00 — 2 players2026-08-14 07:00 — 3 players2026-08-15 14:00 — 2 players2026-08-16 22:00 — 1 players2026-08-18 06:00 — 2 players2026-08-19 13:00 — 3 players2026-08-20 21:00 — 2 players2026-08-22 04:00 — 2 players2026-08-23 12:00 — 6 players2026-08-24 20:00 — 2 players2026-08-26 04:00 — 3 players2026-08-27 12:00 — 4 players2026-08-28 20:00 — 2 players2026-08-30 02:00 — 5 players2026-08-30 18:00 — 8 players
Concurrent players, hourly average, last 30 days (census samples).

Price history

$16.27$0.812017-10-252026-08-302017-10-25 — best price $14.992018-05-07 — best price $14.992018-08-06 — best price $7.492018-11-13 — best price $14.992019-03-02 — best price $6.382019-06-06 — best price $7.502019-09-27 — best price $4.942019-12-13 — best price $16.272020-03-09 — best price $2.992020-05-26 — best price $11.012020-08-03 — best price $2.992020-10-20 — best price $14.992020-12-12 — best price $12.132021-02-20 — best price $14.992021-04-29 — best price $1.492021-06-23 — best price $1.002021-09-01 — best price $1.492021-11-17 — best price $11.012022-02-03 — best price $1.492022-04-19 — best price $14.992022-07-04 — best price $1.392022-10-06 — best price $1.392023-01-03 — best price $14.992023-04-20 — best price $14.992023-07-24 — best price $14.992023-10-29 — best price $1.492024-01-08 — best price $14.992024-04-06 — best price $14.992024-06-19 — best price $1.492024-09-16 — best price $1.492024-11-01 — best price $0.812025-01-04 — best price $14.992025-04-28 — best price $1.502025-07-24 — best price $14.992025-09-30 — best price $1.332025-11-29 — best price $1.282026-02-23 — best price $14.992026-05-14 — best price $1.492026-08-07 — best price $1.202026-08-30 — best price $1.49
Lowest recorded price across tracked stores, per day (census snapshots).

Completion

20
achievements tracked
75.8%
earned "Light at the end of the tunnel"
20.1%
median achievement earned by

Global achievement rates from Steam.

Details

WindowsmacOSLinuxFull controller supportSingle-playerSteam AchievementsFull controller supportSteam Trading CardsSteam CloudFamily Sharing1 DLC

12 supported languages: English, German, Spanish - Spain, French, Japanese, Korean, Portuguese - Brazil, Russian, Simplified Chinese, Italian, Traditional Chinese, Polish

Console footprint

PlatformPlayers trackedCompletionTrophies/achievements
Steam (Steam)12,06326%20
PS4 (PlayStation)4,07780%21
PS4 (PlayStation)3,62380%21
Xbox One (Xbox)2,56258%20
PS4 (PlayStation)1,07288%21
Switch (Nintendo)1550%0

Players tracked by Exophase (achievement/trophy trackers) — a sample of the player base, not total sales.

Player tags

IndieFlightNaturePuzzleColorfulRelaxingAdventureExperienceOpen WorldAtmospheric

Census log

Computed from census-recorded observations only — dates are observation dates.

Players also track

Children of MortaPLANET ALPHAFigmentMages of MystraliaForgotton AnneLEGRAND LEGACY: Tale of the FateboundsPikunikuSemblance

Similarity via IGDB.

Official site ↗Wikipedia ↗