Games like Dueling Nexus

If you finished Dueling Nexus, the closest matches are R-Type Tactics I & II Cosmos, Yu-Gi-Oh! Master Duel, Warhammer 40,000: Gladius - Relics of War, The Battle of Polytopia and Urban Rivals World. All 8 share its card & board game genre and are ranked by how closely their themes and modes overlap.