SuSketch (Surrogate-assisted Sketching tool) is a design tool for first person shooter levels, which leverages surrogate models of gameplay initially explored in SuGAr. The interface allows the designer to work side-by-side with an artificially intelligent creator which predicts the gameplay outcomes (e.g. advantage of one player over the other, death heatmap, and minute-by-minute progression) and suggests alternative powerup placement or class matchups to improve the (predicted) balance.