Green snakes: spawns at all times, jump (up arrow) to avoid. ___________________________________________ Red snakes: start spawning after 2 stages (background cycles), faster than green snakes, jump (up arrow) to avoid. ___________________________________________ Eagles: start spawning after 4 stages (background cycles), duck (down arrow) to avoid. ___________________________________________ Hearts: adds 3 lives ___________________________________________ Shields: protects you for 8 seconds
WARNING: Press green flag twice to play (because of a scratch bug) 7/7/2021: Release 8/7/2021: added hearts and shields
