Here is a large list of a variety of games, which increase in difficulty as the list expands although it should be stated that most of it is for elementary level, some pre-int and nothing above that. The vocab games are especially useful and would work well in teams with one team member being directed by his/her team. The grammar based activities would work well at any part of the lesson and could form part of a grammar auction in places.
Spelling Games
These could work well as a warmer or a cooler but perhaps aren’t substantive enough to work as a filler. With every word spelt, at least 3 questions can follow over the item of vocabulary taught, such as what it is/does, where they can be seen, and so on.
Vocab games
A glut of games here which can function in any part of the lesson but a bare minimum of 10 mins required. As appears to be the case in all games, the target language needs to be fleshed out more. Vocab can be put into sentence form by asking pairs to write on the board a full sentence, perhaps with a pre-chosen tense.
Vocab games galore
A lot to choose from based around lexical sets or topics if you like. The format is mostly match the missing word with the sentence or cloze practice as its also known. Great for fillers to alter the teacher-centred approaches as you can delegate a student to take it. Another option is to get the students to come to the board and write the answers in the gaps first then check them.
Countable & Uncountable nouns games
I think these could work work as a filler but also as a warmer or a cooler. Always expend on the language presented and encourage students to use it and write sentences on the board.
Grammar games
A glut of games that would work well as coolers here.
https://www.englishclub.com/esl-games/grammar/verb-tense-games.htm
Colocation games
Many to choose from here. Once completed on the board, encourage students to write a sentence on the board.
https://www.englishclub.com/esl-games/grammar/adjectives-nouns.htm
50 Adjective Games
These are mostly matching exercises. They need to be fleshed out. For example, choose three (pairs) and make a sentence with each one is the past tense, one in the present tense and one in the future tense. Work in pairs, one writes on paper, the other puts it on the board.
https://www.englishclub.com/esl-games/grammar/matching-adjectives.htm
Pictionary
Two teams. One person is shown a word (noun or verb) and must draw it on the board. The other team has to guess what it is, one point for the right answer. A list of words should be thought about before, Works as a cooler.
Grammar Auction
Simple grammar auction to be used at the end of lesson if necessary.
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