I have recently fixed a couple bugs, please avoid downloading the neoforge version because the play is unable to interact with the green goo liquid.
In an older fix (1.1.2) I fixed the mini goo monsters from being indestructable and fixed them not attacking. I reccomend you download 1.2.1 for Forge, but this is not the version MewZe played on. If you want to play on the same version that MewZe did please look at the bottom of the description. If you are just here to play the mod and have fun download the most recent version 1.2.1.
I didn't spend much time making this mod and I don't regularly make mods so this won't be the best.
However it is currently the best green goo mod avalible (because it's the only one).
The mod includes craftable armour, green goo lakes, a craftable sword, axe, pickaxe and a smeltable portal lighter. When crafting with green goo buckets you will keep the iron, so you will only need 8 buckets and a lake of green goo to craft everything.
If you make it to the green goo dimention (which can be done by creating a portal similar to the nether portal but with green goo obsidian (made by crafting 9 blocks of goo grass) and lighting it with a lighter found by smelting a bucket of green goo) you will find goo monsters. If you defeat one you will be rewarded with a powerful multi-tool that can deal heavy damage, and break blocks quickly.
With the multitool you can craft a goo gun (don't worry, you keep the multi-tool after crafting so you can get the gun and the multi-tool). To craft the gun place the muti-tool in the middle and goo buckets in each corner with goo grass on the sides. To craft a bullet you need one iron nugget and one golden nugget.
Added most of MewZe's songs in version 1.2.0.
His songs will also appear in later versions.
All of his songs can be acessed by putting green goo into a stone cutter.
All fixes are perminant so if there is a feature in an older version it will be avaliable in a newer version with the exception of "The Green Goo" which is significantly stronger in any version before 1.2.1 and being able to make portals with just goo grass rather than goo obsidian (also 1.2.1).
If you have seen the video of MewZe playing this mod, he played version 1.1.2, however I reccomend you download 1.2.0 (if you want to play on the same version of MewZe) because it is practically the same as 1.1.2 with the addition of MewZe's songs as music discs.