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Developer(s) Shade
Publisher(s) Hudson Entertainment
Platform(s) WiiWare
Release date(s) JP March 3, 2009
NA February 23, 2009
EU February 13, 2009
Genre(s) First-person shooter
Mode(s) Single-player, Multiplayer (4), Co-op (4), Online (4)
Input methods Wii Remote + Nunchuk
Compatibility 4Stars4.pngEdit rating: Onslaught
See also...

Dolphin Forum thread
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Onslaught ( MadSecta in Japan) sees the player as a member of a military team sent to a research colony on a distant planet after contact is lost. Upon arrival the team is attacked by swarms of cyborg insects, which the player must destroy and ultimately uncover what happened to the colony. The game features 13 levels grouped into tiers, with the player needing to pass all stages in a tier and defeat a boss in order to progress to the next one.

Like other Wii games in the genre, Onslaught uses the pointer function of the Wii Remote to aim and the Nunchuk to move. Motion controls are also utilized with a throwing motion of the Nunchuk used to toss grenades and waggling of the Remote to reload. Motion controls are also used to wield a laser whip, and to wipe off insect blood which can blind and damage the player. Players can also issue simple orders to two squad mates who provide additional support, while some levels give the player the chance to pilot a heavily armed vehicle.

The game also features online score-based competitive and co-operative multiplayer for up to 4 players through the Nintendo Wi-Fi Connection.


Screen Compression

With Immediately Present XFB disabled, the screen is vertically compressed by 6.67%. To fix this, enable Immediately Present XFB.

Story Screens' Slow Performance

During story scenes like the opening text display and between missions, emulator performance may be very slow. Disable Idle Skipping to fix this.


No configuration changes are known to affect compatibility for this title.

Version Compatibility

The graph below charts the compatibility with Onslaught since Dolphin's 2.0 release, listing revisions only where a compatibility change occurred.

5.0-21148 (current)
2.0 (r5384)
Compatibility can be assumed to align with the indicated revisions. However, compatibility may extend to prior revisions or compatibility gaps may exist within ranges indicated as compatible due to limited testing. Please update as appropriate.


This title has been tested on the environments listed below:

Test Entries
Revision OS CPU GPU Result Tester
5.0-10432 Windows 10 AMD Ryzen 3 1300X @ 3.5 GHz NVIDIA GeForce GTX 1050 Ti Slowdowns around 45FPS occur frequently, usually whenever plenty of insects are nearby or being shot. This issue isn't found on real hardware, but the game is still playable from start to finish. Deerly beloved

Gameplay Videos