exA-Arcadia is an indie PC-based arcade platform released in Japan on November 28, 2019 (with a planned worldwide release in late 2019). It's designed as an affordable modern cartridge-based conversion kit in an era of expensive dedicated machines and digital distribution systems (which force operators to "revenue share" titles).
Designed for use as conversion kits for numerous types of JVS-compatible arcade cabinets, it supports numerous arcade configurations (including linked play and support for both 16:9 high-definition LCD screens and 4:3 standard-definition CRT monitors) and swappable cartidges (with support for four cartridge slots, allowing operators to put multiple games for players to choose similar to the Neo Geo MVS).
While an internet connection is not needed, operators will be able to enable certain online-connected services, including support for smartphone companion apps and integrated Twitch streaming. They can also add their own custom advertisements for the system's attract mode.
As the hardware is not developed by a game studio, games developed for the system are mostly third-party (but published by the exA-Arcadia company themselves) and are commonly ports of games for existing home systems. The Japanese version launched with one game (a port of Aka to Blue), while the worldwide version will launch with six games (the aforementioned Aka to Blue port, and ports of Super Hydorah, Infinos Gaiden, Shaolin vs Wutang: Eastern Heroes, Strania: The Stella Machina, and Danmaku Unlimited 3).