The Game Census
S.U.M. - Slay Uncool Monsters cover art

S.U.M. - Slay Uncool Monsters

Doomster Entertainment · 2021-02-19

Steam

CasualIndieFree To Play

Modes: Single player · Perspectives: Bird view / Isometric

Releases: Feb 19, 2021 (PC (Microsoft Windows)), Jan 12, 2021 (Nintendo Switch)

In S.U.M. you'll put your Quick-Math skills to test! Fight very Uncool Monsters using Addition, Subtraction, Multiplication & Division. Level up and progress in the Campaign(s), or show your prowess in Endless Mode with Leaderboards.

S.U.M. - Slay Uncool Monsters is a Casual, Indie, and Free To Play game released in 2021, priced at free-to-play, with a Very Positive review sentiment (94% of 148 reviews) and an owner estimate of 20,000 .. 50,000.— census verdict as of 2026-09-20

0
playing now
94%
positive of 148 reviews
Very Positive
steam's rating (official)
20,000–50,000
owners (SteamSpy est.)
Verified
Steam Deck (Valve)
SteamOS: Playable
Free
steam price (US)

0 players in-game as of 2026-10-14 08:00 UTC (census sample)

Health check

Quiet
  • · 0 players in-game at the last census sample.
  • · 11 reviews in the last 8 weeks (~1/week).
  • · Review velocity down 21% vs the prior 8 weeks.
  • · Top 25% of 29,056 Casual games in the census by review count.

Health tier since 2026-09-01

Review momentum

PositiveNegative
272720212026Week of 2021-02-01: 14 positiveWeek of 2021-03-01: 27 positiveWeek of 2021-03-01: 1 negativeWeek of 2021-04-01: 8 positiveWeek of 2021-05-01: 3 positiveWeek of 2021-05-01: 1 negativeWeek of 2021-06-01: 2 positiveWeek of 2021-06-01: 1 negativeWeek of 2021-07-01: 5 positiveWeek of 2021-07-01: 1 negativeWeek of 2021-08-01: 7 positiveWeek of 2021-09-01: 3 positiveWeek of 2021-10-01: 6 positiveWeek of 2021-11-01: 13 positiveWeek of 2021-12-01: 4 positiveWeek of 2022-01-01: 1 positiveWeek of 2022-01-01: 2 negativeWeek of 2022-03-01: 3 positiveWeek of 2022-04-01: 2 positiveWeek of 2022-06-01: 3 positiveWeek of 2022-07-01: 3 positiveWeek of 2022-08-01: 2 positiveWeek of 2022-11-01: 3 positiveWeek of 2022-12-01: 1 positiveWeek of 2023-01-01: 1 positiveWeek of 2023-02-01: 1 positiveWeek of 2023-03-01: 2 positiveWeek of 2023-06-01: 1 positiveWeek of 2023-07-01: 1 positiveWeek of 2023-08-01: 1 positiveWeek of 2023-08-01: 1 negativeWeek of 2023-09-01: 2 positiveWeek of 2023-10-01: 1 positiveWeek of 2023-11-01: 2 positiveWeek of 2023-12-01: 3 positiveWeek of 2024-01-01: 1 positiveWeek of 2024-02-01: 1 positiveWeek of 2024-04-01: 2 positiveWeek of 2024-06-01: 1 positiveWeek of 2024-07-01: 2 positiveWeek of 2024-08-01: 2 positiveWeek of 2024-09-01: 1 positiveWeek of 2024-10-01: 1 positiveWeek of 2024-11-01: 3 positiveWeek of 2024-12-01: 2 positiveWeek of 2025-01-01: 1 positiveWeek of 2025-01-01: 1 negativeWeek of 2025-04-01: 2 positiveWeek of 2025-05-01: 1 positiveWeek of 2025-07-01: 1 negativeWeek of 2025-08-01: 1 positiveWeek of 2025-10-01: 1 positiveWeek of 2025-11-01: 1 positiveWeek of 2025-11-01: 1 negativeWeek of 2026-01-01: 2 positiveWeek of 2026-05-01: 1 positiveWeek of 2026-06-01: 1 positive
Weekly review counts (Steam review histogram). Positive above the line, negative below.

Players online

202026-09-15 08:00 — 0 players2026-09-16 17:00 — 0 players2026-09-18 00:00 — 0 players2026-09-19 08:00 — 0 players2026-09-20 15:00 — 1 players2026-09-21 23:00 — 0 players2026-09-23 06:00 — 0 players2026-09-24 14:00 — 1 players2026-09-25 21:00 — 0 players2026-09-27 05:00 — 1 players2026-09-28 12:00 — 0 players2026-09-29 20:00 — 0 players2026-10-01 03:00 — 0 players2026-10-02 11:00 — 0 players2026-10-03 19:00 — 1 players2026-10-05 03:00 — 0 players2026-10-06 10:00 — 0 players2026-10-07 18:00 — 1 players2026-10-09 01:00 — 1 players2026-10-10 09:00 — 0 players2026-10-11 16:00 — 0 players2026-10-13 00:00 — 0 players2026-10-14 08:00 — 0 players
Concurrent players, hourly average, last 30 days (census samples).

Completion

60+
achievements tracked
84.9%
earned "SUM x10"
10.6%
median achievement earned by

Global achievement rates from Steam.

Details

WindowsFull controller supportSingle-playerSteam AchievementsFull controller supportSteam CloudSteam LeaderboardsFamily Sharing7 DLC

1 supported languages: English

Post-launch support: 7 DLC released, first 2021-01-18, latest 2021-02-19 (Steam store data)

Player tags

2DFunnyIndieLogicRetroArcadeCasualPuzzleEducationDark Fantasy

Census log

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

Players also track

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Similarity via IGDB.

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