A strange little side quest
The next time Sniper Team asks for one more try, remember that game ideas rarely appear from nowhere. Modern chess traces back to the Indian game chaturanga, recorded around the sixth century and built around pieces representing parts of an army. And then there is this: Doom changed game design and distribution in 1993 by separating its engine from content and spreading widely through shareware. The details change, but the appeal of learning a system and trying again is remarkably persistent.