Singleplayer: Small bugs reported here and there and a bunch of them are already fixed. We're especially aware of the "middle mouse click" bug. Re-map option on the way! Devs will fix more stuff as they come in.

Bugs Fixed
 
    * Added keyboard binding for cast self (default middle mouse button)
    * Steam usernames longer than 15 characters will now be shortened instead of crashing.
    * Fixed a bug when displaying an already disposed server in server listing which caused a crash.
    * Multiple move orders with delays will now properly stop during the delay.
    * The errorReport in the application directory now also contains a version numbers.
    * Server lists can now be properly scrolled.
    * Path names are now region safe.
    * Chapter 6 Scene 4 (Grimnir mind duel) now spawns the correct amount of spawns.
    * Removed VAC option, all online games now use VAC.
    * Improved cutscene-skip in Chapter 2 Scene 2.
    * Improved cutscene-skip in Chapter 3 Scene 3.
    * Checkpoint added in Chapter 6 Scene 5 (Grimnir boss fight).
    * Statuseffect desync crash fixed.
    * Animation time desync crash fixed.
    * Additional small fixes.
 
Features added
 
    * Cancel button added to gamepad configuration popup.
    * Icon added for break free action.
    * Icon added for boost action.
    * Icon added for magic action.
 
Known issues:
 
    * No private game/password game option (coming soon)
    * Game stutters slightly on some systems despite good performance
    * Steam attempts to install XNA framework every time game is launched
    * Inexplicable poor performance on some high end machines
    * Sometimes campaign progress is wiped due to network disconnect (yeah this one is annoying)

Magicka Updated Released
Product Update  - Valve 25 Jan 2011
Updates to Magicka have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:
Characters will now clear any crossfading previously in progress when initializing.
Character network performance has been improved.
Servers will now properly clear pending clients when starting a game.
Some grapical improvement has been made to the tutorial level.
Burning grease is now working properly over network.
Grease network performance has been improved.
PhysicsObjects now update their orientations correctly over network.
DamageableObjects status effects now work properly over network.
Character status effects now work properly over network.
Fixed a dialog problem which prevented cutscenes from ending properly.
Wizard castle collision mesh has been adjusted.
Havindr Arena's collision mesh has been adjusted.
Glade's collision mesh has been adjusted.
Hyphen (-) has been added and other fixes have been made to the fonts.
Ruins script has been modified.
Ruins textures has been improved.
A few missing NPC name tags have been added.
A glitch when characters performed multiple move orders in sequence has been fixed.
Picking up items over network has been fixed.
Random teleport over network has been fixed.
Music will reset properly when restarting from checkpoints now.
NPC wizards now use the correct coloring for network clients.

Magicka Updated Released
Product Update  - Valve 14:51
Updates to Magicka have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:
Bugs Fixed
Multiple move orders with delays will now properly stop during the delay.
Steam usernames longer than 15 characters will now be shortened instead of crashing.
The errorReport in the application directory now also contains a version numbers.
Server lists can now be properly scrolled.
Fixed a bug when displaying an already disposed server in server listing which caused a crash.
Path names are now region safe.
Chapter 6 Scene 4 (Grimnir mind duel) now spawns the correct amount of spawns.
Removed VAC option, all online games now use VAC.
Improved cutscene-skip in Chapter 2 Scene 2.
Improved cutscene-skip in Chapter 3 Scene 3.
Checkpoint added in Chapter 6 Scene 5 (Grimnir boss fight).
Added keyboard binding for cast self (default middle mouse button)
Statuseffect desync crash fixed.
Animation time desync crash fixed.
Features added
Cancel button added to gamepad configuration popup.
Icon added for break free action.
Icon added for boost action.
Icon added for magic action.

Magicka Updated Released
Product Update  - Valve 13:05
Updates to Magicka have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:
 
Fixed issues/bugs  
UPnP will no longer crash the game.
Lack of playable avatar will no longer crash the game.
Improved reports on disconnect and connection failed.
Game crash on startup due to old gamer with long name fixed.
Game terminates properly on crash.
Save data wipe bug on multiplayer disconnect fixed.
Boss crashes in Chapter 6 and 12 fixed.
Servers limited to 4 simultaneous steam users.
Players that have not selected a slot when the game starts is kicked.
Server browser no longer displays games of a different version.
Version miss match check.
No longer possible to bounce between islands in Chapter 6
Fixed interrupted dialog from Vlad in Chapter 6.
Fixed trigger sequence in Chapter 9.
Chapter 12 boss damage texture added.
Fixed a bug where a client was locked in an animation.
Delayed message from steam no longer forces player into game.
Challenges are now playable using the French version
 
New features/balancing  
Added version number in menu.
Added server password. (player requested feature)
Default undie-time changed to 0.5s (Staff of the Dead)
Known Issues  
Beam spells merging sometimes crashes game with stack overflow (for real)
Chat still awkwardly positioned.
Self-shields sometimes get out of sync
Players are still able to have multiple summons
Server list sorting not implemented
Network congestion on high ping (>400ms) connections still problematic.
Game stutters slightly on some systems despite good performance (cause known, fix pending)
Steam attempts to install XNA framework every time game is launched or rare occasion
Game sometimes hogs uplink bandwidth - (Being researched)

Thunderstorm
Effect: Thunderbolt, now with 900% more glorious carnage! Effectively a mix of Rain and Thunderbolt, it will begin to rain both water and thunder from the skies, striking at random positions on the battlefield. Use with caution.

Singleplayer: Small bugs reported here and there and a bunch of them are already fixed. We're especially aware of the "middle mouse click" bug. Re-map option on the way! Devs will fix more stuff as they come in.

Changelog for Patch #4 - January 28th Note! we'll be working all weekend to make the next patch, but since Steam doesn't (they like their free time...weird huh?) patch #5 won't be deployed until Monday! We appreciate you having patience over the weekend. If multiplayer acts up, try singleplayer, local co-op or LAN play. We'll be here over the weekend listening to you.
 
Fixed issues/bugs
 
    * Fixed Move orders such as the one in Chapter 12 (For real this time).
    * Fixed trigger ID sync over network (Should fix Chapter 7 crash).
    * Fixed uninitialized AI crashing.
    * Fixed crashes due to messages arriving early in high latency games.
    * Fixed Vlad incorrect clothes in Chapter 3.
    * Fixed server list bug, which caused users to connect to wrong game.
    * Fixed joining a password protected game through steam overlay.
    * Fixed falling damage not working properly.
    * Fixed "OMG they killed yellow.." achievement awarded when killing purple (Good theory on the LA Lakers)
    * Improved disconnect notice.
    * Improved damages over network.
    * Improved cut scene skip in early Chapter 1.
    * Improved chat position.
    * Improved challenge level selection indicator.
 
 
 
New features/balancing
 
    * Added Checkpoint to the party in Chapter 1
    * Added missing boss titles in Chapter 1 and 12.
    * Balanced Dwarf Priests (Swedish Chef Brigade); are now more difficult.
    * Balanced Chapter 9 boss; is now more difficult.
    * Balanced Chapter 12 boss; is now more difficult.
 
 
 
Known Issues
 
    * Beam spells merging sometimes crashes game with stack overflow (for real)
    * Self-shields sometimes get out of sync
    * Players are still able to have too many summons (Changed because of community feedback)
    * Server list sorting not implemented
    * Network congestion on high ping (>400ms) connections still problematic.
    * Game stutters slightly on some systems despite good performance (cause known, fix pending)
    * Steam attempts to install XNA framework every time game is launched or rare occasion
    * Game sometimes hogs uplink bandwidth - (Being researched)
    * "Too fancy for fireballs" achievement is sometimes not awarded
    * Quitting the game while the credits are rolling will not award a game complete.
    * Mouse outside screen in full screen with multiple monitors will minimize the game.
    * Chat still awkwardly positioned.
 
Workaround
 
Pending

Je confirme la note de la rédac, simplement du fait qu'il faille utiliser Steam pour un jeu comme celui-ci

And how is it done?
The level scripts are regular XML files. Just open any of the *.xml files in Content\Levels\[insertlevelnamehere] with your favourite text editor. If you have basic programming knowdledge, or have already worked with some kind of level script editor (like the ones in Warcraft or Starcraft), their contents may seem familiar to you. The rest is common sense. I figured everything out by myself, and the function of the tags is really apparent by the way they are named. Often you can even read comments by the developers. Maybe I will create some kind of function reference on this site.
What is possible with modding?
 
Everything that is defined in the levels, except for the actual level geometry. That includes the behaviour of NPCs, dialogues, cutscenes, enemy spawns (including bosses), the location of items, transitions between levels, and the progress of some achievements. Of course it is possible to cheat in various ways. I don't know how modifying level files affects multiplayer.
...and what isn't?
 
Everything else, as far as I know. You can't change the actual appearance of levels and their trigger areas, as they are defined in some kind of undecompilable XNA format. The same goes for model and texture files. If it is possible to modify other aspects of the game, let me know.