Up arrow makes the frog jump straight up for a random distance. Left arrow moves frog left. Right arrow moves frog right. To pass level 1 you must catch 10 frogs in 30 seconds. To pass level 2 you must catch 10 frogs in 25 seconds. To pass level 3 you must catch 10 frogs in 20 seconds.
I remixed my game Frog Lunch game and added 3 levels. The characters and background are all included with Scratch.