The Game Census
Sky Force Anniversary cover art

Sky Force Anniversary

Infinite Dreams · 2015-04-29

SteamPlayStation StoreMicrosoft Store

ActionIndie

Modes: Single player, Multiplayer, Co-operative · Perspectives: Bird view / Isometric

Releases: Mar 16, 2017 (Wii U), Nov 08, 2018 (Nintendo Switch), Apr 29, 2015 (PC (Microsoft Windows)), Apr 29, 2015 (Mac), Apr 29, 2015 (Linux), Sep 07, 2016 (PlayStation 4)

Legendary shoot-'em-up makes its way on the PCs! Abundant explosions, truly epic boss fights and beautifully crafted 3D environments are here to keep you entertained. Sky Force Anniversary offers single player experience and local cooperative mode for 2 players.

Sky Force Anniversary is a 2015 Action and Indie game priced at $9.99, with an estimated 200,000 to 500,000 owners and a Very Positive review sentiment (92% of 2170 reviews).

7
playing now
92%
positive of 2.2k reviews
Very Positive
steam's rating (official)
200,000–500,000
owners (SteamSpy est.)
77/100
critic score (2 outlets, IGDB)
80/100
IGDB user rating (39 ratings)
1
Nexus mods (500 downloads)
4.44★
PlayStation Store rating (9,964 ratings)
platinum
deck/linux tier (ProtonDB)
Verified
Steam Deck (Valve)
SteamOS: Playable
$9.99
steam price (US)

7 players in-game as of 2026-10-14 13:00 UTC (census sample)

Health check

Quietly active
  • · 7 players in-game at the last census sample.
  • · 59 reviews in the last 8 weeks (~7/week).
  • · Review velocity up 18% vs the prior 8 weeks.
  • · Top 11% of 27,667 Action games in the census by review count.

Health tier since 2026-08-30

Estimated sales: 54k–131k copies

Review-multiple estimate from 2,175 total reviews — how this is computed.

Current store prices

Microsoft Store$9.99

Deal snapshots via CheapShark, refreshed daily.

All-time low: $0.99 at Steam (2018-11-06)via IsThereAnyDeal

12-month high $9.99 · on sale 4 of 15 observed days · $9.00 above the all-time low (census price snapshots)

Review momentum

PositiveNegative
818120182026Week of 2018-01-01: 17 positiveWeek of 2018-01-01: 3 negativeWeek of 2018-02-01: 9 positiveWeek of 2018-03-01: 8 positiveWeek of 2018-04-01: 5 positiveWeek of 2018-04-01: 1 negativeWeek of 2018-05-01: 8 positiveWeek of 2018-05-01: 1 negativeWeek of 2018-06-01: 9 positiveWeek of 2018-06-01: 1 negativeWeek of 2018-07-01: 17 positiveWeek of 2018-07-01: 2 negativeWeek of 2018-08-01: 4 positiveWeek of 2018-08-01: 2 negativeWeek of 2018-09-01: 4 positiveWeek of 2018-09-01: 1 negativeWeek of 2018-10-01: 3 positiveWeek of 2018-11-01: 81 positiveWeek of 2018-11-01: 2 negativeWeek of 2018-12-01: 29 positiveWeek of 2018-12-01: 4 negativeWeek of 2019-01-01: 15 positiveWeek of 2019-01-01: 2 negativeWeek of 2019-02-01: 11 positiveWeek of 2019-03-01: 11 positiveWeek of 2019-03-01: 1 negativeWeek of 2019-04-01: 3 positiveWeek of 2019-04-01: 2 negativeWeek of 2019-05-01: 7 positiveWeek of 2019-05-01: 2 negativeWeek of 2019-06-01: 36 positiveWeek of 2019-06-01: 1 negativeWeek of 2019-07-01: 39 positiveWeek of 2019-07-01: 1 negativeWeek of 2019-08-01: 8 positiveWeek of 2019-09-01: 5 positiveWeek of 2019-09-01: 1 negativeWeek of 2019-10-01: 4 positiveWeek of 2019-11-01: 23 positiveWeek of 2019-12-01: 48 positiveWeek of 2019-12-01: 2 negativeWeek of 2020-01-01: 28 positiveWeek of 2020-01-01: 5 negativeWeek of 2020-02-01: 22 positiveWeek of 2020-02-01: 3 negativeWeek of 2020-03-01: 24 positiveWeek of 2020-04-01: 51 positiveWeek of 2020-04-01: 1 negativeWeek of 2020-05-01: 18 positiveWeek of 2020-05-01: 3 negativeWeek of 2020-06-01: 13 positiveWeek of 2020-06-01: 2 negativeWeek of 2020-07-01: 44 positiveWeek of 2020-07-01: 5 negativeWeek of 2020-08-01: 17 positiveWeek of 2020-08-01: 1 negativeWeek of 2020-09-01: 11 positiveWeek of 2020-10-01: 12 positiveWeek of 2020-11-01: 12 positiveWeek of 2020-11-01: 1 negativeWeek of 2020-12-01: 24 positiveWeek of 2020-12-01: 2 negativeWeek of 2021-01-01: 37 positiveWeek of 2021-01-01: 3 negativeWeek of 2021-02-01: 10 positiveWeek of 2021-03-01: 9 positiveWeek of 2021-03-01: 3 negativeWeek of 2021-04-01: 13 positiveWeek of 2021-05-01: 10 positiveWeek of 2021-06-01: 11 positiveWeek of 2021-07-01: 25 positiveWeek of 2021-07-01: 3 negativeWeek of 2021-08-01: 9 positiveWeek of 2021-09-01: 6 positiveWeek of 2021-10-01: 12 positiveWeek of 2021-10-01: 1 negativeWeek of 2021-11-01: 11 positiveWeek of 2021-12-01: 21 positiveWeek of 2021-12-01: 1 negativeWeek of 2022-01-01: 19 positiveWeek of 2022-02-01: 9 positiveWeek of 2022-02-01: 1 negativeWeek of 2022-03-01: 7 positiveWeek of 2022-03-01: 1 negativeWeek of 2022-04-01: 8 positiveWeek of 2022-04-01: 1 negativeWeek of 2022-05-01: 9 positiveWeek of 2022-05-01: 1 negativeWeek of 2022-06-01: 12 positiveWeek of 2022-07-01: 11 positiveWeek of 2022-08-01: 5 positiveWeek of 2022-08-01: 1 negativeWeek of 2022-09-01: 6 positiveWeek of 2022-09-01: 1 negativeWeek of 2022-10-01: 5 positiveWeek of 2022-10-01: 1 negativeWeek of 2022-11-01: 8 positiveWeek of 2022-12-01: 10 positiveWeek of 2023-01-01: 18 positiveWeek of 2023-01-01: 1 negativeWeek of 2023-02-01: 7 positiveWeek of 2023-03-01: 8 positiveWeek of 2023-04-01: 13 positiveWeek of 2023-04-01: 1 negativeWeek of 2023-05-01: 9 positiveWeek of 2023-06-01: 4 positiveWeek of 2023-07-01: 9 positiveWeek of 2023-08-01: 3 positiveWeek of 2023-08-01: 2 negativeWeek of 2023-09-01: 8 positiveWeek of 2023-09-01: 2 negativeWeek of 2023-10-01: 11 positiveWeek of 2023-10-01: 3 negativeWeek of 2023-11-01: 13 positiveWeek of 2023-12-01: 10 positiveWeek of 2024-01-01: 8 positiveWeek of 2024-02-01: 3 positiveWeek of 2024-03-01: 8 positiveWeek of 2024-04-01: 8 positiveWeek of 2024-05-01: 9 positiveWeek of 2024-05-01: 1 negativeWeek of 2024-06-01: 6 positiveWeek of 2024-06-01: 2 negativeWeek of 2024-07-01: 4 positiveWeek of 2024-08-01: 7 positiveWeek of 2024-09-01: 9 positiveWeek of 2024-10-01: 2 positiveWeek of 2024-10-01: 2 negativeWeek of 2024-11-01: 5 positiveWeek of 2024-12-01: 9 positiveWeek of 2024-12-01: 1 negativeWeek of 2025-01-01: 10 positiveWeek of 2025-02-01: 8 positiveWeek of 2025-03-01: 10 positiveWeek of 2025-03-01: 2 negativeWeek of 2025-04-01: 1 positiveWeek of 2025-04-01: 1 negativeWeek of 2025-05-01: 3 positiveWeek of 2025-05-01: 2 negativeWeek of 2025-06-01: 11 positiveWeek of 2025-06-01: 1 negativeWeek of 2025-07-01: 7 positiveWeek of 2025-07-01: 1 negativeWeek of 2025-08-01: 6 positiveWeek of 2025-08-01: 1 negativeWeek of 2025-09-01: 3 positiveWeek of 2025-09-01: 2 negativeWeek of 2025-10-01: 5 positiveWeek of 2025-10-01: 1 negativeWeek of 2025-11-01: 5 positiveWeek of 2025-12-01: 3 positiveWeek of 2026-01-01: 7 positiveWeek of 2026-02-01: 8 positiveWeek of 2026-02-01: 1 negativeWeek of 2026-03-01: 4 positiveWeek of 2026-03-01: 1 negativeWeek of 2026-04-01: 7 positiveWeek of 2026-04-01: 1 negativeWeek of 2026-05-01: 7 positiveWeek of 2026-06-01: 7 positiveWeek of 2026-06-01: 2 negativeWeek of 2026-07-01: 10 positiveWeek of 2026-07-01: 1 negativeWeek of 2026-08-01: 3 positive
Weekly review counts (Steam review histogram). Positive above the line, negative below.

Players online

1502026-09-14 22:00 — 1 players2026-09-16 07:00 — 2 players2026-09-17 14:00 — 7 players2026-09-18 22:00 — 1 players2026-09-20 05:00 — 1 players2026-09-21 13:00 — 5 players2026-09-22 20:00 — 1 players2026-09-24 04:00 — 4 players2026-09-25 11:00 — 2 players2026-09-26 19:00 — 4 players2026-09-28 02:00 — 5 players2026-09-29 10:00 — 0 players2026-09-30 17:00 — 7 players2026-10-02 01:00 — 4 players2026-10-03 08:00 — 4 players2026-10-04 17:00 — 11 players2026-10-06 00:00 — 3 players2026-10-07 08:00 — 1 players2026-10-08 15:00 — 7 players2026-10-09 23:00 — 2 players2026-10-11 06:00 — 9 players2026-10-12 14:00 — 3 players2026-10-13 21:00 — 4 players2026-10-14 13:00 — 7 players
Concurrent players, hourly average, last 30 days (census samples).
552Apr 2015Aug 2026Apr 2015 — avg 2 · peak 44Aug 2015 — avg 3 · peak 10Dec 2015 — avg 8 · peak 33Apr 2016 — avg 3 · peak 10Aug 2016 — avg 8 · peak 20Dec 2016 — avg 12 · peak 45Apr 2017 — avg 6 · peak 18Aug 2017 — avg 6 · peak 19Dec 2017 — avg 13 · peak 36Apr 2018 — avg 5 · peak 17Aug 2018 — avg 4 · peak 13Dec 2018 — avg 16 · peak 43Apr 2019 — avg 5 · peak 17Aug 2019 — avg 5 · peak 16Dec 2019 — avg 12 · peak 42Apr 2020 — avg 17 · peak 57Aug 2020 — avg 6 · peak 16Dec 2020 — avg 8 · peak 37Apr 2021 — avg 6 · peak 14Aug 2021 — avg 6 · peak 18Dec 2021 — avg 7 · peak 22Apr 2022 — avg 4 · peak 18Aug 2022 — avg 4 · peak 14Dec 2022 — avg 7 · peak 26Apr 2023 — avg 5 · peak 14Aug 2023 — avg 4 · peak 14Dec 2023 — avg 5 · peak 15Apr 2024 — avg 4 · peak 13Aug 2024 — avg 4 · peak 13Dec 2024 — avg 5 · peak 16Apr 2025 — avg 4 · peak 11Aug 2025 — avg 4 · peak 12Dec 2025 — avg 5 · peak 19Apr 2026 — avg 4 · peak 10Aug 2026 — avg 4 · peak 11
Monthly average players (source: steamcharts.com) — history via steamcharts.com; live census sampling since Aug 2026.

Price history

$9.99$0.992015-04-292026-10-112015-04-29 — best price $8.992015-06-22 — best price $9.992015-11-25 — best price $6.492016-01-04 — best price $9.992016-05-31 — best price $1.992016-07-04 — best price $9.992016-11-25 — best price $4.992017-02-06 — best price $9.992017-10-26 — best price $6.992017-11-28 — best price $9.992018-02-15 — best price $4.992018-07-05 — best price $9.992018-11-21 — best price $0.992019-01-03 — best price $9.992019-06-26 — best price $0.992020-01-02 — best price $9.992020-03-26 — best price $0.992020-07-09 — best price $9.992020-11-25 — best price $2.492021-01-05 — best price $9.992021-06-24 — best price $2.492021-12-01 — best price $9.992022-01-27 — best price $2.492022-03-07 — best price $9.992022-12-22 — best price $2.492023-03-23 — best price $9.992023-12-21 — best price $7.992024-02-19 — best price $9.992024-12-19 — best price $7.992025-02-17 — best price $9.992025-06-26 — best price $7.992025-10-06 — best price $9.992026-03-19 — best price $7.492026-06-15 — best price $9.992026-08-30 — best price $9.992026-09-20 — best price $9.992026-10-11 — best price $9.99
Lowest recorded price across tracked stores, per day (census snapshots).

Completion

27
achievements tracked
63.8%
earned "You'll Need More Than That, Mantis!"
24.1%
median achievement earned by

Global achievement rates from Steam.

Details

WindowsmacOSLinuxFull controller supportSingle-playerMulti-playerShared/Split ScreenSteam AchievementsFull controller supportSteam Trading CardsSteam CloudSteam LeaderboardsRemote Play on TVRemote Play Together1 DLC

10 supported languages: English, French, Italian, German, Spanish - Spain, Japanese, Korean, Polish, Portuguese - Brazil, Russian

Post-launch support: 1 DLC released, first 2015-04-30 (Steam store data)

Console footprint

PlatformPlayers trackedCompletionTrophies/achievements
PS4, PS3, PS Vita (PlayStation)24,72313%14
Xbox One (Xbox)7,4438%26
Steam (Steam)3,8367%27
Switch (Nintendo)70%0

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

Where its players are

Share of Steam reviews by language (top languages measured) — a proxy for where the player base lives.

Player tags

2.5DCo-opIndieRetroActionArcadeClassicShooterColorfulBullet Hell

Census log

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

Players also track

Unclaimed WorldENDLESS Legend™GET EVENZigguratThe Jackbox Party Pack 3Judgment: Apocalypse Survival SimulationFigmentUse Your Words

Similarity via IGDB.

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