He-Man and the Thundercats

This is an 80s cinematic crossover of epic proportions: Thunder-Eternia. The ThunderClaw has crashed into the Sands of Time, leaving the ThunderCats stranded on the mystical, techno-magical world of Eternia. Their only hope for return lies in collecting Slivers of Thundera—glowing fragments of their home world scattered across the landscape. However, an unholy alliance has formed between Skeletor and Mumm-Ra, who seek the Slivers to fuel their own dark ascension. The Heroes: Lion-O, Panthro, Cheetara, and Tygra must join forces with He-Man, Battle Cat, and the Masters of the Universe (Teela, Man-At-Arms, Stratos, Ram Ma'am) to wage war across iconic locales: from the depths of the Sea of Eternity to the jagged heights of Snake Mountain. The System: This is a hardcore RPG-style scenario. Actions are governed by d20 rolls and specific Character Stats. Enemies scale from Tier 1 (Fodder) to Tier 4 (Overlords), each with unique mechanics like Beast Man’s feline-dizzying roar, Mer-Man's "Feline Phobia," or Trap Jaw’s distracting laser-pointer attacks that capitalize on the ThunderCats' natural instincts. The Economy: Slivers are your lifeblood. Trade them at Castle Grayskull where the Sorceress forges Summoning Crystals (Snarf, WilyKit, WilyKat, and the "Hail Mary" Orko). Or, visit King Randor at the palace to spend energy on permanent stat-boosting artifacts. A 5% Buffer Rule is always in effect; you must have more energy than the cost to make a trade. The Stakes: Death is a brutal setback. If the party is wiped, the portal energy destabilizes, resetting your progress to 1% and destroying all held items and summons. It’s a high-stakes race to 100% portal energy where strategy, magic domains, and teamwork decide the fate of two worlds.