Contest: Build a Defense System!

This contest has ended. Thank you for all your great entries. Please check out the winners and highlighted entries below!

Welcome to the 10th official Principia Building Contest!

This week the topic is to build a defense system. The player has to reach a goal but must first run past a defense system that protects it. What obstacles will he face? How does he get past? Are there any weak spots? Use your creativity to build an impressive system!

You have until next Thursday (April 24th)! Good luck! The winner recevies a Golden Trophy and the runner up gets a Silver Trophy!


The level must be in adventure mode!

How to Submit an Entry

After you have uploaded your level, browse to its level page, choose the correct contest and click "Enter level into contest".



Log in to comment on this level.
  • JOELwindows7: Congratz @TechZ:
  • ricardito08: @rom1k: D:
    Never get highlighted!
  • keeghan: I don't get it, I'll never win:(
  • rom1k: The contest has now ended. Thank you for all the entries and congrats to the winners! :)

    Winner: INFILTRATE THE BUNKER ! by TechZ
    Runner-up: steal the diamond by sjoerd1999
    Highlighted: Hacker's Journey by Leis, GIMME DAT GOLD! by that guy

    New contest is up soon.
  • Leis: @sdac: Thanks :D I hope I did make it.. hmm
  • sdac: The contest ends around 13:00 GMT tomorrow
  • Leis: Pardon me...the due time is when ? And what your date now ?
  • JOELwindows7: Welcome to Principia ugh, I mean Bithack AB rom1k!
  • hello: @TechZ: great...
  • TechZ2124: Welcome to Principia rom1k ! Also I just posted my entry, have a look to it !
  • ricardito08: I might get highlighted
  • ricardito08: @rom1k: Shoot! I'll make another level like that!
  • ricardito08: @rom1k: Welcome to Principia!
    @Leis: Red is administraters. Green is global moderators.
  • Leis: @pajlada: it OK :)
    @rom1k: Hi , u the new family member of red name people?
  • rom1k: Please note: The task is to build a defense system which the player must run past to reach a goal, not a base for the player to protect himself from robots.
  • pajlada: @Leis: Ah, in the contest listing. You're right, thanks :)
  • Leis: @pajlada: Hmm but I still see all level have been highlighted
  • pajlada: @Leis: Nope, but we do have one more member of our "jury" to help us decide what level should win.
    The issue where all levels were "highlighted" was a bug, and was fixed within an hour of the first level being entered into the contest.
  • Leis: @pajlada: still..Hmm does that mean winner determine by vote now?
  • FirePhenixFire: @pajlada: No
  • pajlada: Are all levels still showing as highlighted?
  • ricardito08: All highlighted?!
  • ricardito08: @sdac: @pajlada: Well I used lua life bar. Will that give be a better advantage?
  • ricardito08: @TechZ: Your going again?! Jeez! Wow! I wished I had a trophy like you
  • hello: @TechZ: nonononononononono, we see that black diamond trophy, so please don't participate!!!!!!!!!
  • Leis: @TechZ: Nice :D let fight in a peace way Haha feel excited because I am bored for too long
  • incrazyboyy: @TechZ: nooo :D
  • TechZ2124: @Leis: Sorry, the contest master wants more trophies and have starts to build a giant level ;)
  • Golden: Hmmmm, i try to make an balloon tower defense
  • Leis: @incrazyboyy: there is no such thing! :) just do u best!! And learn thing..Lol let hope techz doesn't take part rofl
  • incrazyboyy: @Leis: because if you take part, the others have no chance :D
  • hello: A thing to note, my level looks like a custom level, but that's only the original. It went through a revision.
  • hello: Most of these levels arent even legal
  • hello: Check out mine (impenetrable doorway) its tough, but does not use complicated mechanics, which reduces lag
  • Leis: @incrazyboyy: Lol why not fair?
    @ricardito08: yes we r :D but contest mean test someone's ability.. important is learn something
  • keeghan: @sdac: Check out tower defense game.
  • ricardito08: @Leis: We are good buddies eh? We can help eachother. Can we?
  • ricardito08: @incrazyboyy: What's not fair?
  • incrazyboyy: @Leis: hey, that's not fair!
  • RAY5D: NEED IDEA!!!nooooooo....
  • ricardito08: Hey! My level is entered. Does anyone like Lua health bars? Well you are in the right level!: Robot vs enemy robots!
  • Leis: @sdac: Hmm all highlighted? Nice..I will participate while I waiting for 1.5 :D
  • Geremy and Joshua: I wish all the people judge our defenses but the more important is the contest i hope someone would win:-) and check my tower defense 2000
  • teox: check out T.A.D.S
  • ricardito08: @Arrow: k@that guy: Ik
  • that guy2: @ricardito08: well you can't win by begging.
  • Arrow: Hmmm... What makes a defense system awesome? AI?
  • ricardito08: Go easy on me plz!!! I want to win!
  • keeghan: Please let me win.
  • that guy2: Is my security system acceptable?
  • principia fan: Mr.Snob
  • AzoteX: Try The Donjon ! :)
  • johncena59rus: Ооо даааааа!!!
  • RasmusOlle: We got highlighted LOL
  • that guy2: Wo0o0o0o0o0o0o0ot!!!!!!!
  • kej1: Wow!!!
  • ricardito08: @sdac: I'm going in!
  • ricardito08: This is what I wanted!! I'm in!
  • sdac: Good luck everyone!