Obsolete is a free anime web series from Bandai Namco Arts. The first half of the series is on YouTube, and if you select subtitled/closed captions you'll get scripted English rather than the algorithms best guess!
Two new playtests will start with the goal of contributing to a yet-to-be-announced book.
Mekton Zeta is a sci-fi RPG based on mecha anime.
Beam Saber is a narative-based mecha game from Austin Ramsay. The universe is stuck in The War, the organisations that perpetuate it apparently too vast to be taken down or beaten.
I think Lancer is equally suited to one-off game as it is a mega-campaign that lasts for years.
Nivanh Chanthara is a self-taught concept artist who works as Eidos Montreal and has illustrated for the likes of Dreamworks, 20th Century Fox and Adult Swim.
It only takes a $20 pledge to get the BattleTech Beginner box. A quick Google says they're out of stock at most places, including Catalyst Game Labs.
Also, there's a freebie available at the Catalyst Game Labs store right now in the form of BattleTech: Chaos Campaign - Succession Wars.
Justin Kahler's Beamswords and Bazookas is lightweight but packs a hefty punch. It's a clever merger of two games; the first is a mech skirmish game and the second is an RPG.
He's worked with companies like Warner Bros, Thunder Road pictures and 20th Century Fox.