https://www.eslgamesplus.com/past-simple-irregular-verbs-esl-grammar-interactive-activity-online/

Irregular verbs ( Listen and repeat )

                                http://www.funenglishgames.com/videos/grammar/irregularverbs.html

Simple past of irregular verbs

http://www.manythings.org/wbg/verbs_past1-sw.html

Snakes and Ladders ( Simple Present vs Present Continuous )

http://www.eslgamesworld.com/members/games/grammar/present%20tenses/present%20tenses%20snakes%20and%20ladders.html

Fling the teacher! ( present continuous )

http://www.eslgamesworld.com/members/games/grammar/fling%20the%20teacher/actionverbs/present%20progressive%20multiple%20choice.html

Simple past: Questions

http://web2.uvcs.uvic.ca/elc/studyzone/330/grammar/pastnq2.htm

Simple past: negatives

                   http://web2.uvcs.uvic.ca/elc/studyzone/330/grammar/pastnq1.htm