chipate - CHIP-8 Emulator

Original CHIP-8 keypad maps to your keyboard:

1 2 3 C    →    1 2 3 4
4 5 6 D    →    Q W E R
7 8 9 E    →    A S D F
A 0 B F    →    Z X C V

Typically you can use either WADS or zxcv for game controls.