A friend just introduced me to awbw a few weeks ago. I don’t think it’s new, but I had no idea it was out there.

awbw is to Advance Wars as Pokemon Showdown is to Pokemon. It’s a free web simulation of the mechanics, designed to make it easy to enjoy the multiplayer.

It has the COs, units, and map elements of the GBA and DS games. AFAIK most of the maps themselves are user made. COs are split into tiers, because (unsurprisingly), some are significantly advantaged over others.

You can play simultaneously, but there’s an apparent emphasis on async matches.

So yeah, just sharing in cases other people who might be interested weren’t aware of this.