“This map features three main puzzle areas: an energy ball puzzle with piston obstacles, a “fling” puzzle that requires an understanding of timing and portal creation, and a button puzzle that utilizes experimental technology. Though nominally beginning in Chamber 16, it mostly takes place Behind the Scenes, and seeks to distinguish the player as being a unique character, rather than Portal’s protagonist.”
- Title: Accident Prone
- File Name: prtl1-sp-accident-prone.7z
- Size : 4.75Mb
- Author: Mark Major AKA Shmitz
- Date Released: 08 November 2007
Copy the maps and materials folder into your Portal installation.
Usually here: Steam\SteamApps\< USER NAME HERE >\portal\portal\
Don’t worry about overwriting files or folders because it only copies new files or the PlanetPhillip folder files, which can be overwritten.
This installation creates a new folder in your Bonus Maps menu called “planetphillip”. Inside this folder will be this map and others you may have previously downloaded.
- Launch Portal
- Select Bonus Maps
- Select PlanetPhillip
- Select Accident Prone
- Click Load
- Enjoy
None
None
None
I was hoping to create my own video with all of the above included but I ran out of time and couldn’t do that tricky jump to get to the area you are not supposed to [if you watch the videos, you'll know what I mean].
- Overcomplicating Accident Prone and a neat shortcut
- How to get to where you shouldn’t
- Full walkthrough
Click on the thumbnails below to open a 800 pixel wide image.
WARNING: The screenshots contain spoilers.
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
Please note: These statistics are valid from December 2010
-
115Overall
-
0Today
-
1Last 7 days
-
2Last 30 days
-
66365 days
4th August 2010
- Why not follow these comments via RSS?
- Get your own GRAvatar.
- Don't forget that Feedback should be honest, fair AND useful.
- Please read the Comments Guide if you are new to commenting.


















4th August 2010
I really enjoyed this and liked the inclusion of a new mechanic; the energy ball.
One jump required special timing but nothing too hard. Whilst this won’t challenge the better Portal players is was fun for me. I’ll be posting the author’s other Portal map tomorrow, but that is a really hard map.
All in all a fun 15 minutes. Be sure to check the videos I linked to in the main post.
5th August 2010
The map was relatively straight forward for me, though there were a few parts of the map that you could get to, but didn’t actually lead anywhere.
The energy tetherball didn’t work at all how I was expecting it too. In my attempts to figure out how I was supposed to use it, I managed to get it completely stuck in about 3 different places, requiring a restart. Adding in a fizzler field before entering the room might have gone a long way towards reducing this effect.
Tetherball spoiler:
I still don’t know if this was the actual intended method of solving that puzzle.
The ending was well worth the frustration, a small touch that raised it way up above the average portal map endings.
28th August 2010
once again using things in ways which they were never intended to be used.
hurray for tetherball!
31st October 2010
I am now struggling with the tetherball, —— never in the field of my history have I used noclip so much for so little advantage.
I just don’t see these puzzles — even when I know where to go, I can’t figure out how to get there, -or I can, but only half of it.
THINKS! this guy is too clever for me.
Maybe it is because it halloween, I bet the guy is american– those colonials have it in for us old English, don’t you know.
Phillip says above that it’s 15 minutes of fun – I’ve been at it for hours and no closer.
Must be a clever chap — Phillip
Grrrr!