# Evaluation of the User Adaptation in a BCI Game Environment +
## 6 Conclusions  
In this paper, Zombie Jumper was developed, which is a BCI-controlled game. The game consists of two commands, moving forward and jumping. To record the raw EEG data, a Muse 2 headband was used. The OpenViBE platform was employed to process and classify the brain signals, and the Unity engine was used to build the game. Lastly, in order to make the game BCI controlled, the LSL protocol was used as the connective link. To evaluate the experiment, 37 subjects tested the game. They played the first level 20 times, and the best 18 of them proceeded to the next level. It was observed that most of the participants adapted to the BCI game, significantly improving their performance while playing the game. All subjects were interviewed after their session and stated that they enjoyed Zombie Jumper.  
For the classification process, two algorithms were tested, MLP and LDA. The accuracy of MLP was 98.74%, and this value was 98.75% for LDA. One of the goals of this work was to examine user adaptation and improvement. The results showed that users gradually improved their performance after each repetition. Level 1 average improvement was 7.63%, while for level 2, the average improvement was 2%. Lastly, the overall average level 1 score was 52.70, while the overall average level 2 score was 70.35.  
In the future, the goal is to extend Zombie Jumper to be completely controlled by BCI. More difficult levels will be developed, and multiple characters will be added. Furthermore, the goal is to increase the number of commands allowing the character to perform extra moves. The BCI application in this study was based on a 2D game. Further research will be focused on the use of BCI in various research areas, such as the control of virtual or augmented environments, and commanding autonomous vehicles, such as electrical wheelchairs.  
Conceptualization, M.G.T.; methodology, K.G., G.P., K.D.T., N.G. and M.G.T.; software, K.G. and G.P.; validation, K.G. and G.P.; writing--original draft preparation, K.G. and G.P.; writing--review and editing, K.G., G.P., K.D.T., N.G. and M.G.T.; supervision, M.G.T.; project administration, M.G.T. All authors have read and agreed to the published version of the manuscript.  
This work is partially supported from the project \"AGROTOUR-New Technologies and Innovative Approaches to Agri-Food and Tourism to Boost Regional Excellence in Western Macedonia\" (MIS 5047196), which is implemented under the Action \"Reinforcement of the Research and Innovation Infrastructure\", funded by the Operational Programme \"Competitiveness, Entrepreneurship and Innovation\" (NSRF 2014-2020), and co-financed by Greece and the European Union (European Regional Development Fund). Additionally, this work has been co-financed by the European Union and Greek national funds through Operational Program Competitiveness, Entrepreneurship and Innovation under the call RESEARCH--CREATE--INNOVATE: \"Intelli- WheelChair\" (Project Code: T2 EA K-02438).  
Informed Consent Statement: Informed consent was obtained from all subjects involved in the study.  
The authors declare no conflict of interest.