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Rise of the Mushroom Kingdom (Pre-Release)

An enormous total conversion mod that adds elements from the Super Mario series. Includes 3 playable fort races (Toads, Koopas, and Shyguys) an enormous number of NPC races and monsters, powerup foods, secrets and more.

It is not ready yet. I posted it early at Putnam's request since there are some very strange bugs which might be revealing unexpected behaviors in the raw parsing code.
It's not done but you can play with it if you want to (i.e. set creatures to fight in the Arena). There are no graphics yet, so if you want to play you should set the game to Classic graphics mode.

Bugs:

In its current state there is an order-dependent error "undefined local creature material set to default: THWOMP_ROTMK TALLOW". Removing any creature before the THWOMP_ROTMK creature, or moving it forward, changes the creature that throws the error.

The piranha plants also throw an error "undefined creature material set to default: CRATE_ROTMK" which is caused by [APPLY_CREATURE_VARIATION:3_COIN_ROTMK]. This is a very simple creature variation that simply adds an EBO_ITEM and a few creature classes, and it works with most other creatures, although it is a somewhat unusual creature variation in that the EBO_ITEM calls for a material defined in a different creature. This SHOULDN'T be an issue, but it might be revealing an oddity in the creature generation logic.

There are also frequent worldgen crashes, which may or may not be related to the above issues, or might simply be due to something entirely different, as the mod does have a lot of unconventional tricks. I removed most of the really exotic stuff though, so I'm not sure.