Not sure what you mean by support the engine/game.
It does run in Tcadmin. Start/Stop, player list, map info etc.
However, the game was not developed to actually use rcon or something similar. I've researched around since my post and seems like an old site something ... ops.org might have had a admin server tool.
I was just curious if someone really smart around here, devised a tool, has it maybe, that was integrated w/ Tcadmin or something else.
Otherwise, for admin purposes running it via Tcadmin is worthless. You have to fire up the GUI, and then you have access to kick/ban.
Thanks and I hope some older memories are jogged, cobwebs shaken loose.