Pong (one player) is a ready-made Basys 3 FPGA game written in Verilog. It uses buttons, switches, LEDs, 7-segment. Play it free right in your browser - nothing to install, no FPGA board needed.
How to play
btnU / btnD (arrow keys) move the paddle, btnC (Space) restarts, sw0 pauses, sw1 doubles the speed. Score on the 7-segment display, misses on the LEDs.
What it uses
Verilog · buttons, switches, LEDs, 7-segment
The code: download the Verilog project (.zip) — read it, change it, and run your version with the free PC program.