Math Sprint (keypad) is a ready-made Basys 3 FPGA game written in Verilog. It uses PmodKYPD 4x4 keypad, VGA. Play it free right in your browser - nothing to install, no FPGA board needed.
How to play
Answer sums in 60 seconds: type the answer on the keypad, F = enter, E = delete. sw0 adds times tables. btnC starts.
What it uses
Verilog · PmodKYPD 4x4 keypad, VGA
The code: download the Verilog project (.zip) — read it, change it, and run your version with the free PC program.