Racer 10K is an idle racing game: your car earns while it runs, and you spend the earnings on upgrades that make it earn faster. Progress continues while the tab is closed.
Like all idlers, the interesting decision is which upgrade compounds fastest rather than which sounds best — a multiplier beats a flat increase almost every time.
Yes — it's an idle game, so earnings accumulate while the tab is closed and you collect them on return.
Multipliers, almost always. A percentage increase compounds with everything else you own, while a flat increase doesn't.
Yes — tap to play. Nothing to install.