Bfxr is an elaboration of the glorious Sfxr, the program of choice for many people looking to make sound effects for computer games.
Bfxr has moved in the direction of increased complexity and range of expression. All the buttons that you know and love are here, but there are some new things as well:
5 new waveforms : triangle, breaker, tan, whistle, and pink noise.
3 new filters : compression, harmonics, and bitcrusher.
Ability to lock parameters during mutation/randomization.
Expanded pitch-jumping abilities - good for arpeggiation effects.
Keeps your sounds and mixes in persistant lists.
Can reverse synths
Ability to link directly to sounds
You have full rights to all sounds made with bfxr, and are free to use them for any purposes, commercial or otherwise.
Simple, fast-paced games with colorful graphics and catchy audio, that require few or no explanations, can be played in short bursts, and usually require a lot of skill. Similar in style and spirit with the arcade game cabinets of the 80s and 90s.