SD Gundam Capsule Fighter Online is a Third Person Shooter created by Korean company Softmax that was released in 2007. Starting with the Korean service provided by Netmarble, the game has since expanded to other regions under different companies. It features a variety of content, with missions based off of events from various Gundam series and units from the original Mobile Suit Gundam all the way to modern works like Mobile Suit Gundam 00.
The game system is a rather simple one, with a playstyle similar in ways to Gundam vs Gundam Next. Units have a static weapon set though some have the option to change to an alternate mode with a different set of weapons. General playstyle among the units is differentiated by a rock-scissors-paper system where rock-types have a damage advantage against scissor-types, etc. Units can be leveled up to have skills that activate as you continue to deal and take damage. The game also features unit customization, where you can boost some of the units stats or apply new paint and stickers to a unit.
All in all, a somewhat casual-friendly game that doesn't take a very high-end computer to run.