"Project Jumper" has been created by Chipacabra as a tutorial on developing a platformer game with flixel and has later been ported to Haxe(Flixel).

Controls:

Move - W + A / Left + Right
Shoot - J / X
Jump - L / C
Select entry on the menu - space
The original tutorial series by Chipacabra:

Note that this tutorial is was originally written for AS3-Flixel. The concepts are still valid for HaxeFlixel you can see the entire demo was ported to HaxeFlixel to work the same.

​Project Jumper Part 0: No, seriously, what the heck am I doing?
Project Jumper Part 1: Let's get organized

Project Jumper Part 2: The bare minimum

Project Jumper: Interstice

Project Jumper Part 3: I love what you've done with the place

Project Jumper Part 4: Introducing the opposition

Project Jumper Part 5: Killing the player, aka Failure Is Always an Option.

Project Jumper Part 6: Sound; Bleeps Bloops and Frustrated Screams

Project Jumper: Interstice II

Project Jumper Part 7: Lock and Load

Project Jumper Part 8: This isn't stomp at all! Fixing the delay in embedded sounds

Project Jumper Part 9: Agility Training

Project Jumper: Interstice III

Project Jumper Part 10:The Beginning and the (Bad) End

Project Jumper Part 11: They're Everywhere!

Project Jumper Part 12: Odds and Ends

Project Jumper Part 13: Push and Shove