Can You Beat FiveThirtyEight’s NFL Forecasts? Can you outsmart our forecasts? Make your picks using the sliders below. Our NFL forecasts are based on a simple algorithm called Elo ratings, which use only a few pieces of information to rate each team and project each game. But beware: We’re asking you to make a probabilistic forecast for each matchup — and our game punishes overconfidence. For the full rules, read here. The margin of victory in each NFL game won’t affect your score.