Sorry, this is not really a game, and in some ways somebody could perceive it as oldwarez... but it really is abandoned by Twelve Tone Systems (now Cakewalk); they don't sell or in any way acknowledge their glorious DOS past. From what I understand, THEY don't even have it anymore.
It has taken me years to track this down; I bought a boxed copy from a garage sale, which is the only one I've seen, ever! Please help keep it available. This is Cakewalk Professional 4 for DOS, the last version (the last Cakewalk 4 for DOS before Cakewalk 5 for DOS, that is).
https://mega.co.nz/#!ghRnRC6Q
(key is BHyEojWj-gah9ijzD72O5z9whut8fV500tphxiQ3NSk)
(there's a mirror here:
http://depositfiles.com/files/5n9z4sq23)
There's also the less usable 3.0:
https://mega.co.nz/#!YtAGWDaI
(key emW-JwV0j52ncp1oBMIQTTFs8wF_fVgh5fsfJ1ZqZuE)