I know what games I like. I want to play more games similar to those I like. When looking at games on Steam, the first question is "is this similar to games I like?".

Starting your blurb with something like "[Game] like Star Fox crossed with Pokémon." immediately grabs my attention, and tells me that if I like either of those games, the trailer might be worth a look.

Compare to: "[Game] is a hybrid on rails sci-fi shooter with monster catching elements." Which is still interesting, but feels a bit waffley and runs the risk of sounding a bit generic (as their pig game example was).

Of course, both are extremes; consider a blend of the two: "[Game] is a Star Fox inspired on-rails shooter where you collect unique and magical space creatures".

Don't make the reader have to spend too much time figuring out what your game is. You likely only have a few seconds to get their attention.