Very cool concept.
The art & animations looks really neat & the sound design is good.
Not sure I understood fully what the collectibles where for & I got stuck a lot because of bugs (got stuck linked to a tower and could not undo the link anymore) so I had to reload the game a few time, but I enjoyed it. :)
Very juicy, ! With a little more polish, some debugs & a few more features, it has potential.
Good job :)