In 2014, I used a video game theme for field day, and it went extremely well! I used water balloon sling shots (ends held by adults) to knock down pigs for Angry Birds. The birds went through a lot of testing (I had mini Angry Bird kickballs), and what ended up working best was tennis balls colored for different bird types. I set up tables with cardboard obstacles (even plastic container lids to mimic ice/glass) for game realism. The pigs were print-outs taped to paper plates on plastic bowling pins. I did a couple Minecraft stations (a treasure/ore hunt, a structure building activity, and Creeper archery). I even created a full life-sized version of Plants Vs. Zombies.
1) Angry Birds (see pics)
2) Plants vs Zombies (see pics and video)
3) Mario Run - Basic obstacle course
4) Minecraft - Create blocks out of cardboard (or use cones), play the treasure hunt memory game with "ore" under the blocks or cones. Give them pickaxes and swords like the game to knock over the ore or cones to add realism.
5) Minecraft 2 - Use Legos at a table to have timed creation challenges between 8-12 students at a time, with a teammate waiting in line.
6) Just Dance - I had this as a station inside the gym. Use a projector or Apple TV.
7) Boom Blox - like a slower builders and bulldozers. Have team A build up with any equipment you'd like (I like cardboard boxes painted like bricks). Then see how long it takes team B to throw items (yarnballs, etc) and destroy the structure (stopwatch). Then switch and time the other team.
8) Super Mario Kart - Either do tire races with a race track type of setup with cones, or have scooters either in the gym or on a blacktop surface, with obstacles as a relay race.
9) Hungry Shark - Use shark on remote car and tag students: https://twitter.com/PerkettPE/status/961658350814478336
10) Clash of Clans - Play hula hut throwdown or castleball with hula hoop structures.
11) Pokemon - Have pictures laminated of many different pokemon on cones with a bucket or milk crate next to it. Each team has a score sheet list of each pokemon, checklist style). 4-6 teams, have the first student on each team toss/throw a pokeball (plush, wiffle ball or similar), attempting to get it in a bucket. If successful, the team gets to check off that pokemon as caught. Let the first person get 3 attempts before switching with the next in line.