Inspired by classic Commodore 64 and arcade games, Promethium is a hard-as-nails retro inspired side-scrolling shoot-em-up that takes place over numerous levels that get harder and harder. If you’re after a nice calm casual game this isn’t it!

Positive Now
65%20 reviews on Steam
30-Day Trend
—Not enough history yet (since 21 Oct 2026)
Last 12 Months
23%−31 pts on 55% since launch
Reviews Last Month
1December 2024, −43% on the 12-month average
Positive and negative reviews each month, August 2017 to December 2024
| Month | Positive | Negative | Share positive |
|---|---|---|---|
| December 2024 | 1 | 0 | 100% |
| January 2023 | 0 | 1 | 0% |
| October 2021 | 0 | 1 | 0% |
| August 2019 | 0 | 1 | 0% |
| January 2019 | 1 | 0 | 100% |
| November 2018 | 1 | 0 | 100% |
| August 2018 | 0 | 1 | 0% |
| July 2018 | 0 | 1 | 0% |
| June 2018 | 0 | 2 | 0% |
| April 2018 | 0 | 1 | 0% |
| January 2018 | 0 | 1 | 0% |
| December 2017 | 0 | 1 | 0% |
| August 2017 | 9 | 0 | 100% |
Steam’s own monthly review graph, read each month. How we count
Steady at 65% positive since 21 Oct 202620 reviews when we first checked
Steam’s review score each time our store check saw it change, since 21 Oct 2026. How we count
| Notable | Month | Reviews | Positive |
|---|---|---|---|
| Busiest month | August 2017 | 9 | 100% |
Best and worst counts months with at least 50 reviews.