In this paper, we report the first exploitation of liquid marbles for implementation of interaction gates. The gate realised in the experimental laboratory conditions is a combination of the fusion and the Margolus gate: output trajectories of collided liquid marbles are so close that they can be interpreted as a single output. That said, if required, two liquid marbles at the output can be diverted along different paths to conserve a number of signals. By taking advantage of the liquid marbles' inherently low hysteresis, high tunability and capacity for enhanced versatility, we demonstrate the first step toward liquid marble facilitated, collision-based computing.