Bugs:

The portal mechanic can be used within the game anywhere, this includes teleporting the player into out of bounds areas

Strengths:

The portal mechanic is interesting and engaging as it provides the character a lot of freedom in their choices. The character has a shadow-like effect that trails behind them which gives the character more personality. The character's movement speed suitably matches the length of each room so the environment changes at a pace that makes the game engaging.

Weaknesses:

There lacks any sound, the character is slightly blurry in game (caused by scaling the character within GDevelop its self), there currently aren't animations so the character feels slightly static. There isn't anything to indicate an end-goal (The player will know what to do ect. move to the next room but they don't really know why they have to or what they're collecting and what the use of collecting these items is. If something infers an end goal, they might find a reason to collect the items rather than avoid them)

Change or Improvements:

Add an animation, add sounds, maybe something to indicate an end goal, perhaps a narrative or story to explain their goal, finish the floor and black square item graphics