THE CHAOS EFFECT was a Valiant Universe crossover storyline published in 1994. The story had a tie-in with every Valiant series published at the time. The storyline began in the CHAOS EFFECT: ALPHA one-shot and finished in the CHAOS EFFECT: OMEGA one-shot. Existing series crossover issues were grouped in chapters also named after letters in the Greek alphabet: BETA, GAMMA, DELTA, and EPSILON. The storyline was followed by the two-issue mini-series CHAOS EFFECT: EPILOGUE.