A few Wii games had thousand MBs of DLC. That is no excuse.

Donop Black Classic Controller Console Gampad Gaming Pad Joypad Pro for Nintendo Wii 2 Pack, Model: , Electronics & Accessories Store

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Wii Games, Accessories & Wii Console - Best Buy

At the Nintendo Fall Press Conference in October 2008, Satoru Iwata announced that Wii owners would have the option to download WiiWare and Virtual Console content directly onto an SD card. The option would offer an alternative to "address the console's insufficient memory storage". The announcement stated that it would be available in Japan in spring 2009; Nintendo made the update available on March 25. In addition to the previously announced feature, it lets the player load Virtual Console and WiiWare games directly from the SD card. The update allows the use of cards, increasing the limit on SD card size from 2 GB to 32 GB.

The Wii system supports wireless connectivity with the without any additional accessories. This connectivity allows the player to use the Nintendo DS microphone and as inputs for Wii games. The first game utilizing Nintendo DS-Wii connectivity is . Players with either the Nintendo DS games are able to play battles using the Nintendo DS as a controller. , released on both Nintendo DS and Wii, features connectivity in which both games can advance simultaneously. Nintendo later released the , which allows Wii owners to download or additional data to their Nintendo DS in a process similar to that of a . The console is also able to expand Nintendo DS games.

Download Wii Games • Wii Game iSO Torrent

For these games to work on Your Wii - You must have it Unlocked with a special software tool OR a Mod-Chip has to be present in your console to bypass copy protection.
If you have one of the above you can play games from SD card, DVD-R or USB HD Drive.
Full Wii Game Download ISO will be 4.37 GB big, but there are "scrubbed" versions of the backup with padding space from the DVD removed. Normally they work just as well as the full / unaltered backup, but can save you time ans space when downloading.
So a much easier and faster way to get a working backup of your Wii Games is by downloading a ready made Wii ISO from the net and using image burning software to copy it to DVD-R. All in just a couple of easy steps.

List of Wii games - Wikipedia, the free encyclopedia

914.88 million Wii games have been sold worldwide as of June 30, 2016, and had surpassed the million-unit mark by March 2011. The most successful game (, which comes bundled with the console in most regions) sold 82.78 million copies worldwide by March 2016, surpassing as the best-selling game of all time. The best-selling unbundled game, , had sold 36.75 million units.

The game development suite can be used to create official Wii games; however, the developer must be authorized by Nintendo to develop games for the console. Games must also be accepted by Nintendo to be sold.