If you're not having fun, you're doing it wrong.
The LONG overdue retheme of the 'Asgard' expansion into the Thundercats universe is now complete:
Thundercats: Portal to Limbo
When I ran out of Thundercats for conversion, I switched gears and started adding "Silverhawks", just for the heck of it. Now, after 30 years, the 'Cats and 'Hawks can finally team up together against the forces of Saturday-morning Evil. (Meh, ...thematically, it works.)
The original conversion of the base 'Yggdrasil' game is here:
Thundercats: Dark Eclipse (Game Manual)
Thundercats: Dark Eclipse (Printable Cardsets)
Thundercats: Dark Eclipse (Optional 'Oversize' Thundercat Cards and Gameboard)