Opis gry Grampa Grumble:
The old Grampa is the world box champion. Your challenge is fighting against him and winning. Do not let the grandfather hit you, so be on guard and do your best.
Use "V", "B" and "N" to hit. You can defend yourself by pressing the spacebar. Do not let him hit you or your energy level will decrease and you will lose. If you fall, use the spacebar to stand up.