This game is based on Too many bugs by Amaarofa The object of the game is to touch the screen to direct a hungry frog to jump to catch some flies for for a snack. Level 1 is to learn how to direct the frog, while level 2 has a hornet that patrols the screen and can sting and paralyze the frog, resetting the level. Level 3 has two hornets patrolling the screen. If you succeed in directing the frog to eat all of the flies in level 3 you win the game. You may want to add more hornets or levels. But this demonstrates how you might make such a game with MIT App Inventor blocks.
Demo Video:
HungryFrog.aia (1.5 MB)