I made this for my art test. The assignment was to "re-skin" one of OfferCraft's game templates to reflect a hypothetical new client, which would be a home energy efficiency company. I went a little overboard with the lightbulb character, but it paid off!
Since I I was hired in August 2016, I've designed dozens of similar game experiences for clients. See below for a few samples.

Please note: you don't have to provide a real email address when asked. The system uses it to send rewards, but these games are just samples so you can't actually win anything.
A Thanksgiving-themed game where you eat food to uncover a prize. Click here to play.
A simple game of chance where each briefcase contains a different prize. Click here to play.
A scratch ticket game that I customized to look like a box of chocolates for Valentine's Day. Click here to play.
Pocket as many balls as you can before time runs out. Click here to play.
Throw snowballs at snowmen in this Winter-themed game. Click here to play.
Occasionally, I also create marketing collateral for the games that I design:
I've also designed a couple sets of icons for mobile apps. What does this company do again?