This version is a fork of @cflewis version. There are two differences.

• It can build again on modern computers, tested on Ubuntu 21.04.
• You have infinite lives! Your life counter counts how many Marios you have used instead.

Infinite Mario Bros source code has a bug in the timing, which prevents it working on Mac OS X, and maybe other platforms. This version uses the timing from the Mario AI competition, and is Mac-compatible.