Made for the 2016 Flatgame event. I broke a lot of rules, but the simplicity of the prompt certainly initiated this project.
Use WASD for movement.

Just when you thought it was safe to go back... Spiko the Hedgehog 2016 is here! In a playable demo format, that is! Available in: exe format for Windows, HTML5 format for all OS's.

Features:
- Unique spike & hedgehog gameplay. Attack with your back, roll with your body! Never before have you experienced the world through the eyes of a hedgehog.
- Five unique power-ups. Move fast with Balloon Mode, get supercharged with "Invulnerability", and don't forget about the classic 1-ups!
- Real world dynamics. Hear the howl of a fierce wind as you ascend a cliff. Listen to the chilling music of the Ice Caves.
- The fastest hero alive. With gameplay featuring velocities up to 250 miles per hour, you'll really feel the thrill of speed!
- Full environmental interaction. The world responds to your presence! Go for a swim in a lake, hear your claws pound as you run across a metal grate.
- A new way to move. Tired of running around everywhere yourself? Try out an Action Ladder to automatically climb up or down.
- Progressive integrated plot. You make the decisions. Live as Spiko, the hedgehog, as the face their daily challenges and must face moral dilemmas.
- Expanded moveset. Think Spiko can just run left and right? Think again! Spin, dig, jump, and claw your way through the world!
- Amusing original characters. Franky the Squirrel. Loyel the Owl. Sally the Lombat. Meet them all!
- Fully playable demo. Right here, right now. Can't wait for the full game, or want to try it for free? No worries!
- Fun multiplayer game. (Canceled)

====PLAYER HELP CORNER====

==Controls==
WASD or arrow keys: move around
Ctrl or Spacebar: hold to start a "spindash"™ and build up speed! Release to go.
Shift or E: attack
J: jump move
G: dig down
M: dig sideways (debug mode only)
Swim: automatic (context sensitive)
Escape: quit game

==Powerups==
Heart gain extra life
Balloon never slow down
MegaSphere cannot be defeated
Sight Shield enemies can't see you
??????? grab it to find out!

Enjoy and please look forward to the full version coming out Q4 2016! Comments and critics will be considered for future development. We wish to please fans.

I used to grow pumpkins when I lived in Ohio.
I've started to grow squash again recently.

Included are various samples and references.
Based on a mechanic my buddy made.

Update!
I made an arcade supported version so two people could play it together somehow and it's slightly rebalanced. I think it's better, but I'm still including the old game in there.