Yes there is real lore, but most of this is implied, as lore is kind of scarce.
Gimkit Lore:
Once upon a time, on an island inhabited by fish, a race known as "gims" were born. it first started with just 2 gims, Vesper and Crafter, they spent there time fishing, until one day, they discovered a substance known as "chemical supreme" they found out that it could do many strange things, like time travelling, but we will get back to that! Eventually more gims started popping up, they also spent there time fishing around purple ponds, beaches, and cosmic coves, until Vesper and Crafter built a boat to explore other reagions of the world, everyone hopped on the boat! However, they had no more fish to eat, so they had to crow plants! They found out that they could grow strange plants, like a lottery seed... but another thing... they figured out they needed energy to move. Energy was so vital, that the Gims split into 2 sides, Echo and Vortex, Vortex kept trying to steal energy from Echo, like in games of Capture the flag, or even tag. One day, a Echo agent predicted a snowstorm would cover the whole island, and he was right! the land of Farmchain was covered, but upon further reaserch, the ground was unstable, that's how they grew mysterious crops! The land started to infect agents, with no other choice, Echo built a spaceship to escape, leaving Vortex behind. Next thing you know, they were up in space! They trusted no one anymore... just then, Crafter decided to test some Chemical Supreme on a plant. BAM! Just like that Crafter single handedly make all the plants go evil, and the ship crashed! The gims were left to climb back to space by jumping as high as they could... to be continued... but wait? About that time travel, apparently, something big is supposed to happen, something HUGE, and they had to time travel to stop it!
Like I said, the lore is kind of weird!