The best alternatives to Retro Play Store are TheAppStore.org, Geo Bootstrap, and My 2000's TV. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of Retro Play Store?
AssemblyAI— Speech-to-Text API with superhuman accuracy
The Gamebuino META is a retro console designed and made in France. Play all the games you loved with a fresh, new experience. It will allow you to make your own games and learn programming. If you are a maker, consider it as an Arduino on steroids. If you are not a maker, it sure will turn you into one)
Launch and navigate throughout an arcade, retro, neon style 2D adventure. collect points, boosts, and fuel but beware of certain obstacles. Travel as further as you can until you run out of energy or lives. The more you travel, the more speed you accumulate. Do you have what it takes to make your way up the leaderboard?