The Game Census
Mastema: Out of Hell cover art

Mastema: Out of Hell

Oscar Celestini · Forever Entertainment S. A. · 2017-03-03

Steam

ActionAdventureCasualIndie

Modes: Single player

Releases: Mar 03, 2017 (PC (Microsoft Windows))

You don't know who you are, where you are and why you are here, you know just thing, you want to survive and get out of HELL!

Mastema: Out of Hell is a 2017 Action, Adventure, Casual, and Indie game priced at $0.84, with a Mixed review sentiment (62% of 148 reviews) and an estimated owner base of 50,000 .. 100,000.

0
playing now
62%
positive of 148 reviews
Mixed
steam's rating (official)
50,000–100,000
owners (SteamSpy est.)
50/100
IGDB user rating (2 ratings)
pending
deck/linux tier (ProtonDB)
Playable
Steam Deck (Valve)
SteamOS: Playable
$0.84
steam price (US)

0 players in-game as of 2026-10-14 19:00 UTC (census sample)

Health check

Quiet
  • · 0 players in-game at the last census sample.
  • · 9 reviews in the last 8 weeks (~1/week).
  • · Review velocity down 25% vs the prior 8 weeks.
  • · Top 33% of 27,649 Action games in the census by review count.

Health tier since 2026-09-01

Estimated sales: 3.7k–8.9k copies

Review-multiple estimate from 148 total reviews — how this is computed.

All-time low: $0.37 at GamersGate (2019-10-03) · bundled 3×via IsThereAnyDeal

12-month high $4.99 · on sale 19 of 30 observed days (census price snapshots)

Review momentum

PositiveNegative
121220172026Week of 2017-03-01: 12 positiveWeek of 2017-03-01: 1 negativeWeek of 2017-05-01: 2 positiveWeek of 2017-05-01: 1 negativeWeek of 2017-07-01: 4 positiveWeek of 2017-07-01: 2 negativeWeek of 2017-09-01: 3 positiveWeek of 2017-09-01: 4 negativeWeek of 2017-10-01: 6 positiveWeek of 2017-10-01: 1 negativeWeek of 2017-11-01: 2 positiveWeek of 2017-11-01: 1 negativeWeek of 2017-12-01: 2 positiveWeek of 2017-12-01: 1 negativeWeek of 2018-01-01: 6 positiveWeek of 2018-01-01: 3 negativeWeek of 2018-02-01: 1 positiveWeek of 2018-02-01: 2 negativeWeek of 2018-03-01: 3 positiveWeek of 2018-03-01: 1 negativeWeek of 2018-04-01: 1 positiveWeek of 2018-05-01: 2 positiveWeek of 2018-05-01: 1 negativeWeek of 2018-06-01: 1 positiveWeek of 2018-06-01: 1 negativeWeek of 2018-08-01: 1 positiveWeek of 2018-11-01: 2 positiveWeek of 2018-11-01: 1 negativeWeek of 2019-01-01: 2 positiveWeek of 2019-02-01: 1 positiveWeek of 2019-02-01: 1 negativeWeek of 2019-04-01: 1 positiveWeek of 2019-04-01: 1 negativeWeek of 2019-05-01: 1 positiveWeek of 2019-06-01: 1 positiveWeek of 2019-07-01: 1 positiveWeek of 2019-07-01: 2 negativeWeek of 2019-08-01: 1 positiveWeek of 2020-02-01: 1 positiveWeek of 2020-03-01: 1 positiveWeek of 2020-03-01: 1 negativeWeek of 2020-04-01: 1 negativeWeek of 2020-05-01: 1 negativeWeek of 2020-07-01: 1 negativeWeek of 2020-08-01: 3 positiveWeek of 2020-08-01: 1 negativeWeek of 2020-10-01: 1 negativeWeek of 2020-11-01: 1 positiveWeek of 2020-12-01: 1 positiveWeek of 2021-05-01: 1 positiveWeek of 2021-05-01: 2 negativeWeek of 2021-06-01: 1 positiveWeek of 2021-09-01: 2 positiveWeek of 2022-03-01: 1 negativeWeek of 2022-04-01: 1 positiveWeek of 2022-05-01: 1 positiveWeek of 2022-06-01: 1 positiveWeek of 2022-07-01: 3 positiveWeek of 2022-08-01: 1 negativeWeek of 2022-12-01: 1 negativeWeek of 2023-04-01: 1 positiveWeek of 2023-05-01: 2 positiveWeek of 2023-05-01: 2 negativeWeek of 2023-06-01: 1 negativeWeek of 2023-10-01: 1 negativeWeek of 2024-02-01: 2 positiveWeek of 2024-03-01: 1 positiveWeek of 2024-06-01: 1 negativeWeek of 2024-08-01: 1 positiveWeek of 2025-01-01: 1 negativeWeek of 2025-12-01: 2 positiveWeek of 2026-01-01: 1 negativeWeek of 2026-02-01: 1 positiveWeek of 2026-03-01: 2 positiveWeek of 2026-04-01: 1 negativeWeek of 2026-05-01: 1 negativeWeek of 2026-06-01: 1 positiveWeek of 2026-07-01: 3 positive
Weekly review counts (Steam review histogram). Positive above the line, negative below.

Players online

2102026-09-15 04:00 — 0 players2026-09-16 12:00 — 0 players2026-09-17 20:00 — 0 players2026-09-19 03:00 — 0 players2026-09-20 11:00 — 0 players2026-09-21 19:00 — 0 players2026-09-23 02:00 — 0 players2026-09-24 10:00 — 0 players2026-09-25 17:00 — 0 players2026-09-27 01:00 — 0 players2026-09-28 08:00 — 0 players2026-09-29 16:00 — 0 players2026-09-30 23:00 — 0 players2026-10-02 07:00 — 0 players2026-10-03 14:00 — 5 players2026-10-04 22:00 — 2 players2026-10-06 06:00 — 5 players2026-10-07 13:00 — 3 players2026-10-08 21:00 — 2 players2026-10-10 04:00 — 0 players2026-10-11 12:00 — 3 players2026-10-12 20:00 — 0 players2026-10-14 03:00 — 0 players2026-10-14 19:00 — 0 players
Concurrent players, hourly average, last 30 days (census samples).
170Feb 2017Aug 2023Feb 2017 — avg 0 · peak 2Apr 2017 — avg 0 · peak 1Jun 2017 — avg 0 · peak 2Aug 2017 — avg 0 · peak 2Oct 2017 — avg 2 · peak 17Dec 2017 — avg 1 · peak 55Feb 2018 — avg 0 · peak 4Apr 2018 — avg 0 · peak 4Jun 2018 — avg 0 · peak 3Aug 2018 — avg 0 · peak 3Oct 2018 — avg 0 · peak 3Dec 2018 — avg 0 · peak 2Feb 2019 — avg 0 · peak 3Apr 2019 — avg 0 · peak 2Jun 2019 — avg 0 · peak 2Aug 2019 — avg 0 · peak 2Sep 2020 — avg 0 · peak 2May 2021 — avg 3 · peak 15Sep 2021 — avg 15 · peak 45Jan 2022 — avg 1 · peak 6Apr 2022 — avg 1 · peak 13Nov 2022 — avg 1 · peak 91Jun 2023 — avg 11 · peak 98Aug 2023 — avg 7 · peak 29

▼ −8 avg players (−51.5%) vs prior month — Aug 2023

Monthly average players (source: steamcharts.com) — history via steamcharts.com; live census sampling since Aug 2026.

Price history

$4.99$0.372017-03-042026-08-242017-03-04 — best price $3.992017-10-17 — best price $2.492018-01-29 — best price $4.992018-04-20 — best price $4.992018-10-15 — best price $4.992018-11-27 — best price $4.992019-02-04 — best price $0.492019-06-25 — best price $0.492019-11-04 — best price $4.992020-01-25 — best price $0.502020-04-03 — best price $4.992020-07-03 — best price $4.992020-10-19 — best price $4.992021-01-03 — best price $4.992021-05-17 — best price $4.992021-09-27 — best price $4.992021-12-13 — best price $4.992022-03-03 — best price $4.992022-07-11 — best price $4.992022-10-31 — best price $4.992023-01-05 — best price $4.992023-04-17 — best price $0.492023-07-21 — best price $0.502023-10-09 — best price $2.282023-12-21 — best price $3.042024-03-21 — best price $4.992024-06-03 — best price $4.992024-08-05 — best price $4.992024-10-24 — best price $4.992024-12-19 — best price $1.942025-04-14 — best price $1.942025-07-21 — best price $4.992025-11-17 — best price $0.842026-04-06 — best price $4.992026-07-27 — best price $0.852026-08-24 — best price $0.84
Lowest recorded price across tracked stores, per day (census snapshots).

Completion

20
achievements tracked
5.2%
earned "Completed stage Soul cliff"
2.2%
median achievement earned by

Global achievement rates from Steam.

Details

WindowsSingle-playerSteam AchievementsSteam Trading CardsPartial Controller SupportSteam CloudFamily Sharing

Player tags

2DIndieActionCasualViolentAdventurePlatformerPixel Graphics

Census log

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

Recent updates

Players also track

Don't Knock TwiceToby: The Secret MineMasochisiaDARQ: Complete EditionInflictionSemblanceDream AloneApsulov: End of Gods

Similarity via IGDB.

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