Invited Papers.- On decision problems for substitutions in symbolic dynamics.- Games with Full, Longitudinal, and Transverse Observability.- Regular Papers.- Reachability set generation using hybrid relation compatible saturation.- Case Study: Reachability Analysis of a unified Combat-Command-and-Control Model.- Qualitative Multi-Objective Reachability for Ordered Branching MDPs.- Quantum-over-classical Advantage in Solving Multiplayer Games.- Efficient Restrictions of Immediate Observation Petri Nets.- Binary expression of ancestors in the Collatz graph.- The Collatz process embeds a base conversion algorithm.- The Complexity of the Label-Splitting-Problem for Flip-Flop-Nets.