Commander Keen
Commander Keen: Invasion of the Vorticons: Episode 1: Marooned on Mars (Dec. 14th 1990) Episode 2: The Earth Explodes (1991) Episode 3: Keen Must Die! (1991) Commander Keen's very first adventure, and the debut of id's groundbreaking side-scrolling technology.
Estimated lifetime revenueHigh confidence
$173.8Kgross
$104.3Klow → high range$295.4K
Net to developer$115.6K
Modeled estimate, not a reported figure. How we estimate →
Est. copies sold
53.6K
mid estimate
Discounts
What happened when the price fell
Every price cut of more than 20% we have observed, in each market that quoted one, with this game's chart position on either side of it. These are episodes, not a model: a sale is one event, and one event cannot tell you what the next one will do.
Price cut of Jul 30
1 marketUnited States$4.99$1.99−60%no chart position on both sides of this date
Reviews, worldwide (the counter carries no country): 0.14/day in the week to Jul 30 → 0.57/day in the week after.
For scale, across Steam · Top Sellers · Brazil over the last 30 days: the 26 chart moves that followed a price cut of more than 20% went a median of 7 places towards #1, and the 2,400 moves with no price cut behind them went 2 away. One store, one chart, one country — it is the only place we have enough observations to say even that.
Prices outside the United States have been collected since 6 August 2026 and chart positions since 19 July 2026, so a cut older than that has no market to compare and a market that joined later has no history yet. Nothing here is converted between currencies.