The best alternatives to TopShot Game are Toggl, CSSBattle, and SuperMakers. If these 3 options don't work for you, we've listed a few more alternatives below.
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Toggl is a time tracking app operated by Toggl OÜ, headquartered in Tallinn, Estonia, that offers online time tracking and reporting services through their website along with mobile and desktop applications.
CSSBattle is an online CSS Code Golfing battleground. Here, players from all around the world try to visually replicate "Targets" in smallest possible CSS code and battle it out to get to the top of the leaderboard. Are You Game?